É. Horváth

S. Asa, K. Kovacs, L. Ştefăneanu, 1990, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Growth factors and cytokines in paragangliomas and pheochromocytomas, with special reference to sustentacular cells

B. Scheithauer, K. Kovacs, S. Melmed, 2002, Endocrine pathology.

Pathology of Pituitary Adenomas and Pituitary Hyperplasia

B. Scheithauer, K. Kovacs, R. Lloyd, 2001 .

Tumors of the Pituitary Gland

B. Scheithauer, K. Kovacs, R. Lloyd, 1990 .

Somatotroph pituitary adenoma with acromegaly and autosomal dominant polycystic kidney disease: SSTR5 polymorphism and PKD1 mutation

B. Scheithauer, K. Kovacs, D. Babovic‐Vuksanovic, 2012, Pituitary.

Pathology of Acromegaly

K. Kovacs, É. Horváth, 2006, Neuroendocrinology.

MGMT promoter methylation and immunoexpression in aggressive pituitary adenomas and carcinomas

B. Scheithauer, K. Kovacs, R. Lloyd, 2011, Journal of Neuro-Oncology.

MGMT immunoexpression in aggressive pituitary adenoma and carcinoma

B. Scheithauer, K. Kovacs, R. Lloyd, 2010, Pituitary.

Effect of Temozolomide in a patient with recurring oncocytic gonadotrophic pituitary adenoma

B. Scheithauer, K. Kovacs, C. Fadul, 2009, Hormones.

Temozolomide therapy in a man with an aggressive prolactin-secreting pituitary neoplasm: Morphological findings.

K. Kovacs, C. Fadul, É. Horváth, 2007, Human pathology.

Cyclooxygenase‐2 expression in human pituitary tumors

B. Scheithauer, K. Kovacs, R. Lloyd, 2003, Cancer.

18 – Pathology of the Pituitary and Sellar Region

B. Scheithauer, K. Kovacs, R. Lloyd, 2010 .

Rhabdomyosarcoma in the region of the sella turcica

K. Kovacs, W. Couldwell, É. Horváth, 2005, Acta Neurochirurgica.

Cushing's syndrome associated with ectopic production of corticotrophin‐releasing hormone, corticotrophin and vasopressin by a phaeochromocytoma

W. Young, K. Kovacs, É. Horváth, 1992, Clinical endocrinology.

Pituitary hyperplasia.

K. Kovacs, É. Horváth, M. Al-gahtany, 2003, Hormones.

Silent Somatotroph Adenoma: A Morphologic, Immunohistochemical and Electron Microscopic Study: A Case Report

B. Scheithauer, K. Kovacs, A. Sav, 2012 .

Pituitary Corticotroph Adenoma Containing Many Apoptotic Cells: A Histologic, Immunohistochemical, Ultrastructural and Molecular Study

K. Kovacs, É. Horváth, H. Smyth, 2002, Ultrastructural pathology.

Vascularization of rat pituitary autografts

B. Scheithauer, K. Kovacs, R. Lloyd, 2006, Journal of anatomy.

Current status on histological classification in Cushing’s disease

K. Kovacs, M. Cusimano, É. Horváth, 2015, Pituitary.

Thioguanine-induced adrenocortical necrosis and its prevention by hypophysectomy in the rat. Light and electron microscopic study.

S. Szabó, K. Kovacs, É. Horváth, 1977, Experimental and molecular pathology.

Clinical case seminar: lymphocytic hypophysitis: clinicopathological findings.

S. Asa, K. Kovacs, S. Ezzat, 1995, The Journal of clinical endocrinology and metabolism.

Leptin and Leptin Receptor in Anterior Pituitary Function

B. Scheithauer, B. Burguera, M. Couce, 2004, Pituitary.

Papillary carcinoma of thyroid metastatic to the pituitary gland.

S. Asa, K. Kovacs, É. Horváth, 2001, Archives of pathology & laboratory medicine.

Ultrastructural changes induced in the liver of rats by various steroid compounds

K. Kovacs, Á. Somogyi, É. Horváth, 1971, Virchows Archiv. B, Cell pathology.

Correlation Between Preoperative Testing and Tumour Morphology in Acromegaly

K. Kovacs, É. Horváth, H. Smyth, 1988 .

Pathophysiology of acromegaly.

G. Braunstein, K. Kovacs, S. Melmed, 1983, Endocrine reviews.

Corticotropic Adenomas by In Situ Hybridization

L. Jin, R. Lloyd, É. Horváth, 2007 .

Analysis of pituitary hormones and chromogranin A mRNAs in null cell adenomas, oncocytomas, and gonadotroph adenomas by in situ hybridization.

K. Kovacs, L. Jin, R. Lloyd, 1991, The American journal of pathology.

Human growth hormone and prolactin secreting pituitary adenomas analyzed by in situ hybridization.

K. Kovacs, R. Lloyd, A. Barkan, 1989, The American journal of pathology.

Apoptosis in nontumorous and neoplastic human pituitaries: expression of the Bcl-2 family of proteins.

B. Scheithauer, K. Kovacs, L. Jin, 1999, The American journal of pathology.

Basic fibroblast growth factor expression by two prolactin and thyrotropin-producing pituitary adenomas

S. Asa, K. Kovacs, S. Ezzat, 1995, Endocrine pathology.

Lost and Found: the Pars Intermedia of the Human Pituitary and its Role in the Histogenesis of Silent “Corticotroph” Adenomas.

K. Kovacs, É. Horváth, 2003 .

Pars intermedia of the human pituitary revisited: Morphologic aspects and frequency of hyperplasia of POMC-peptide immunoreactive cells

K. Kovacs, R. Lloyd, É. Horváth, 1999 .

An immunocytochemical and ultrastructural study of adenohypophyses of mice transgenic for human growth hormone.

K. Kovacs, L. Ştefăneanu, T. Wagner, 1990, Endocrinology.

Subcellular Localization of Leptin in Non-tumorous and Adenomatous Human Pituitaries: An Immuno-ultrastructural Study

B. Scheithauer, B. Burguera, K. Kovacs, 2000, The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society.

Dopamine D2 receptor gene expression in human adenohypophysial adenomas

I. Lancranjan, R. Fahlbusch, K. Kovacs, 2001, Endocrine.

A case for hypothalamic acromegaly: a clinicopathological study of six patients with hypothalamic gangliocytomas producing growth hormone-releasing factor.

B. Scheithauer, E. Laws, J. Bilbao, 1984, The Journal of clinical endocrinology and metabolism.

Pituitary adenomas in mice transgenic for growth hormone-releasing hormone.

S. Asa, K. Kovacs, L. Ştefăneanu, 1992, Endocrinology.

Pituitary tumor transforming gene overexpression facilitates pituitary tumor development.

K. Kovacs, S. Melmed, K. Wawrowsky, 2006, Endocrinology.

The pituitary in gigantism

B. Scheithauer, W. Young, K. Kovacs, 1995, Endocrine pathology.

Somatotroph hyperplasia without pituitary adenoma associated with a long standing growth hormone-releasing hormone-producing bronchial carcinoid.

S. Asa, K. Kovacs, S. Ezzat, 1994, The Journal of clinical endocrinology and metabolism.

Adenohypophysial changes in mice transgenic for human growth hormone-releasing factor: a histological, immunocytochemical, and electron microscopic investigation.

S. Asa, K. Kovacs, L. Ştefăneanu, 1989, Endocrinology.

Somatotroph hyperplasia. Successful treatment of acromegaly by removal of a pancreatic islet tumor secreting a growth hormone-releasing factor.

K. Kovacs, A. Rogol, W. Vale, 1982, The Journal of clinical investigation.

Pituitary specific transcription factor messenger ribonucleic expression in adenomatous and nontumorous human pituitary tissues.

K. Kovacs, L. Jin, R. Lloyd, 1993, Laboratory investigation; a journal of technical methods and pathology.

Morphology of adenohypophysial tumors in mice transgenic for vasopressin-SV40 hybrid oncogene.

J. Polak, K. Kovacs, L. Ştefăneanu, 1992, Endocrinology.

IMMUNOREACTIVE SOMATOSTATIN IN PANCREATIC ISLET-CELL CARCINOMA ACCOMPANIED BY ECTOPIC A.C.T.H. SYNDROME

K. Kovacs, É. Horváth, C. Ezrin, 1977, The Lancet.

Pituitary thyrotroph hyperplasia mimicking prolactin-secreting adenoma

K. Kovacs, A. Sima, É. Horváth, 1984, Journal of endocrinological investigation.

Presence of Human Prolactin-Producing Adenomas and Bromocriptine: A Histological, Immunocytochemical, Ultrastructural, and Morphometric Study

K. Kovacs, M. Thorner, É. Horváth, 1982 .

Immunohistochemical Expression of SNAP-25 Protein in Adenomas of the Human Pituitary

B. Scheithauer, K. Kovacs, R. Lloyd, 2008, Applied immunohistochemistry & molecular morphology : AIMM.

Ultrastructure of the neurohypophysis

B. Scheithauer, K. Kovacs, É. Horváth, 1992, Microscopy research and technique.

Ectopic bioactive luteinizing hormone secretion by a pancreatic endocrine tumor, manifested as luteinized granulosa-thecal cell tumor of the ovaries.

K. Kovacs, R. Lloyd, É. Horváth, 2005, The Journal of clinical endocrinology and metabolism.

10 Pathology of excessive production of growth hormone

B. Scheithauer, E. Laws, K. Kovacs, 1986 .

Somatoliberinoma: morphologic characteristics.

B. Scheithauer, S. Asa, K. Kovacs, 1984, Archives of pathology & laboratory medicine.

Morphology, molecular regulation and significance of apoptosis in pituitary adenomas.

K. Kovacs, É. Horváth, G. Kontogeorgos, 2004, Frontiers of hormone research.

An immunohistochemical survey of nine cases of medullary carcinoma of thyroid including reactivity for Cox-1 and Cox-2 enzymes

K. Kovacs, É. Horváth, F. Rotondo, 2002, Endocrine pathology.

Octreotide effect on growth hormone and somatostatin subtype 2 receptor mRNAs of the human pituitary somatotroph adenomas

K. Kovacs, S. Melmed, L. Ştefăneanu, 2000, Endocrine pathology.

Aggressive silent corticotroph adenoma progressing to pituitary carcinoma. The role of temozolomide therapy

B. Scheithauer, K. Kovacs, C. Fadul, 2011, Hormones.

Pituitary Adenoma with Peliosis: A Report of Two Cases

B. Scheithauer, K. Kovacs, M. Cusimano, 2009, Endocrine pathology.

The fine structure of pituitary tumors

K. Kovacs, É. Horváth, D. McComb, 1984 .

Pituitary cells producing more than one hormone human pituitary adenomas

T. Sano, S. Asa, K. Kovacs, 1989, Trends in Endocrinology & Metabolism.

The anterior pituitary in hemochromatosis

B. Scheithauer, K. Kovacs, É. Horváth, 1996, Endocrine pathology.

Pituitary Adenoma with Tumoral Granulomatous Reaction

B. Scheithauer, K. Kovacs, R. Lloyd, 2007, Endocrine pathology.

Neoplasms of the sellar region

K. Kovacs, É. Horváth, M. Lopes, 2006 .

Vinblastine-induced ultrastructural changes in perisinusoidal cells of the rat liver

S. Szabó, E. Reynolds, É. Horváth, 1975, Research in experimental medicine. Zeitschrift fur die gesamte experimentelle Medizin einschliesslich experimenteller Chirurgie.

Ultrastructural study of testis in testicular feminization

K. Kovacs, É. Horváth, A. Chalvardjian, 1976, Archiv für Gynäkologie.

Hormonal and morphological study of the pituitaries in reeler mice

I. Salazar, K. Kovacs, É. Horváth, 2007, International journal of experimental pathology.

Spontaneous Pancreatic Beta Cell Tumor in the Rat

K. Kovacs, É. Horváth, D. Ilse, 1976, Veterinary pathology.

Intrasellar paraganglioma presenting as nonfunctioning pituitary adenoma.

K. Kovacs, É. Horváth, G. Kontogeorgos, 2009, Archives of pathology & laboratory medicine.

In situ hybridization study of estrogen receptor messenger ribonucleic acid in human adenohypophysial cells and pituitary adenomas.

R. Fahlbusch, K. Kovacs, M. Buchfelder, 1994, The Journal of clinical endocrinology and metabolism.

Topoisomerase IIα Expression in Pituitary Adenomas and Carcinomas: Relationship to Tumor Behavior

B. Scheithauer, K. Kovacs, R. Lloyd, 2002, Modern Pathology.

Adrenal schwannoma with apparent uptake of immunoglobulins.

K. Kovacs, É. Horváth, Y. Bédard, 1986, Ultrastructural pathology.

Clinicopathological variations in cushing’s syndrome

G. Booth, S. Asa, K. Kovacs, 1999, Endocrine pathology.

Pancreatic endocrine tumour producing growth hormone-releasing hormone associated with multiple endocrine neoplasia type I syndrome.

S. Asa, K. Kovacs, M. Thorner, 1987, Acta endocrinologica.

Prolactin-Producing Pituitary Adenoma and Carcinoma with Neuronal Components<197>A Metaplastic Lesion

B. Scheithauer, R. Fahlbusch, K. Kovacs, 1999, Pituitary.

Gonadotropic pituitary carcinoma: HER-2/neu expression and gene amplification. Report of two cases.

B. Scheithauer, J. Fletcher, W. Young, 2003, Journal of neurosurgery.

Pituitary tumors in patients with MEN1 syndrome

B. Scheithauer, K. Kovacs, É. Horváth, 2012, Clinics.

Effect of estrogen on the blood supply of pituitary autografts in rats

B. Scheithauer, K. Kovacs, R. Lloyd, 2009, Journal of anatomy.

Immunohistochemical expression of nestin in the non-tumorous hypophysis and in pituitary neoplasms

B. Scheithauer, K. Kovacs, R. Lloyd, 2006, Acta Neuropathologica.

Morphologic effects of cysteamine on the rat adenohypophysis.

S. Szabó, É. Horváth, K. Kovács, 1984, Experimental and molecular pathology.

Bronchial carcinoid tumors metastatic to the sella turcica and review of the literature

B. Scheithauer, K. Kovacs, É. Horváth, 2012, Pituitary.

Neuroendocrine tumor of unknown origin metastasizing to a growth hormone-secreting pituitary adenoma.

K. Kovacs, M. Cusimano, É. Horváth, 2012, World neurosurgery.

EFFECT OF SMS 201–995, A LONG‐ACTING SOMATOSTATIN ANALOGUE, ON THE SECRETION AND MORPHOLOGY OF A PITUITARY GROWTH HORMONE CELL ADENOMA

S. Asa, K. Kovacs, É. Horváth, 1987, Clinical endocrinology.

Glucocorticoid receptor expression in nontumorous human pituitaries and pituitary adenomas

B. Scheithauer, K. Kovacs, R. Lloyd, 2000 .

Ghrelin- and Serotonin-Producing Gastric Carcinoid

Lawrence A Leiter, K. Kovacs, É. Horváth, 2012, Journal of Gastrointestinal Cancer.

Silent Adenoma Subtype 3 of the Pituitary—Immunohistochemical and Ultrastructural Classification: A Review of 29 Cases

K. Kovacs, M. Cusimano, É. Horváth, 2005, Ultrastructural pathology.

Ultrastructural and immunoelectron microscopic study of three unusual plurihormonal pituitary adenomas.

K. Kovacs, É. Horváth, L. Syro, 1999, Ultrastructural pathology.

Pituitary gland.

K. Kovacs, É. Horváth, 1988, Pathology, research and practice.

Hypothalamic Neuronal Hamartoma and Adenohypophyseal Neuronal Choristoma: Their Association with Growth Hormone Adenoma of the Pituitary Gland

B. Scheithauer, E. Laws, K. Kovacs, 1983, Journal of neuropathology and experimental neurology.

O-6-Methylguanine-DNA Methyltransferase (MGMT) Immunohistochemical Expression in Pituitary Corticotroph Adenomas

B. Scheithauer, K. Kovacs, M. Cusimano, 2012, Neurosurgery.

Effect of treatment with octreotide on the morphology of growth hormone—secreting pituitary adenomas: Study of 24 cases

K. Kovacs, É. Horváth, A. Beckers, 1991, Endocrine Pathology.

Pituitary stem cells: candidates and implications

K. Kovacs, R. Lloyd, M. Cusimano, 2013, Pituitary.

Null cell adenoma of the human pituitary

K. Kovacs, É. Horváth, C. Ezrin, 2004, Virchows Archiv A.

Null cell adenomas, oncocytomas, and gonadotroph adenomas of the human pituitary: An immunocytochemical and ultrastructural anafysis of 300 cases

B. Scheithauer, K. Kovacs, É. Horváth, 1993, Endocrine Pathology.

Hyperthyroidism due to inappropriate secretion of thyrotropin in 10 patients.

H. Gharib, B. Scheithauer, É. Horváth, 1992, The American journal of medicine.

Nonidentical expressions of multiple endocrine neoplasia, type I, in identical twins.

H. Gharib, B. Scheithauer, E. Laws, 1986, Mayo Clinic proceedings.

Prolactin cell carcinoma of the pituitary. Clinicopathologic, immunohistochemical, and ultrastructural study of a case with cranial and extracranial metastases

B. Scheithauer, E. Laws, K. Kovacs, 1985, Cancer.

Silent corticotropic adenomas of the human pituitary gland: a histologic, immunocytologic, and ultrastructural study.

K. Kovacs, É. Horváth, W. Singer, 1980, The American journal of pathology.

Medullary cancer of the thyroid gland and its possible relations to carcinoids

K. Kovacs, É. Horváth, R. C. Ross, 1972, Virchows Archiv A.

Morphologic changes of prolactin-producing pituitary adenomas after short treatment with dopamine agonists

B. Scheithauer, K. Kovacs, R. Lloyd, 2005, Acta Neuropathologica.

Myosin XVA expression in the pituitary and in other neuroendocrine tissues and tumors.

B. Scheithauer, K. Kovacs, L. Jin, 2001, The American journal of pathology.

Alcoholic liver lesion. Frequency and diagnostic value of fine structural alterations in hepatocytes.

K. Kovacs, É. Horváth, R. C. Ross, 1973, Beitrage zur Pathologie.

Unusual double pituitary adenoma: A case report

B. Scheithauer, K. Kovacs, M. Cusimano, 2011, Pathology international.

Silent subtype 3 pituitary adenoma: a clinicopathologic analysis of the Mayo Clinic experience

B. Scheithauer, K. Kovacs, J. Atkinson, 2009, Clinical endocrinology.

A Functioning Composite ‘Corticotroph’ Pituitary Adenoma with Interspersed Adrenocortical Cells

K. Kovacs, H. Sasano, D. Hinton, 1999, Pituitary.

Pituitary pathology in erdheim-chester disease

J. Bilbao, K. Kovacs, É. Horváth, 2004, Endocrine pathology.

Mammosomatotroph cell adenoma of the human pituitary: a morphologic entity

K. Kovacs, É. Horváth, C. Ezrin, 2004, Virchows Archiv A.

Idiopathic prolactin cell hyperplasia of the pituitary mimicking prolactin cell adenoma: a morphological study including immunocytochemistry, electron microscopy, and in situ hybridization

K. Kovacs, É. Horváth, H. Smyth, 2004, Acta Neuropathologica.

Crooke's Cell Adenoma of the Pituitary: An Aggressive Variant of Corticotroph Adenoma

B. Scheithauer, F. Meyer, W. Young, 2003, The American journal of surgical pathology.

Silent Corticotroph Carcinoma of the Adenohypophysis: A Report of Five Cases

B. Scheithauer, W. Young, K. Kovacs, 2003, The American journal of surgical pathology.

Corticotroph carcinoma of the pituitary: a clinicopathological study. Report of four cases.

B. Scheithauer, W. Young, P. Burger, 2002, Journal of neurosurgery.

Pituitary Adenoma in Carney Complex: An Immunohistochemical, Ultrastructural, and Immunoelectron Microscopic Study

B. Scheithauer, K. Kovacs, C. Stratakis, 2002, Ultrastructural pathology.

Cushing's disease due to plurihormonal adrenocorticotropic hormone and gonadotropin-producing pituitary adenoma

B. Scheithauer, W. Young, K. Kovacs, 2001, Acta Neuropathologica.

Severe lymphocytic adenohypophysitis with selective disappearance of prolactin cells: a histologic, ultrastructural and immunoelectron microscopic study

K. Kovacs, É. Horváth, H. Smyth, 2001, Acta Neuropathologica.

Pituitary Carcinoma: An Ultrastructural Study of Eleven Cases

B. Scheithauer, F. Meyer, W. Young, 2001, Ultrastructural pathology.

Two cases of pituitary Crooke’s cell adenoma without Cushing’s disease: A histologic, immunocytochemical, electron microscopic andin situ hybridization study

B. Scheithauer, J. Bilbao, K. Kovacs, 1999 .

Xanthomatous hypophysitis: A novel entity of obscure etiology

J. Bilbao, K. Kovacs, H. Lehnert, 1999, Endocrine pathology.

Salivary gland-like tumors of the sellar region.

B. Scheithauer, K. Kovacs, A. Rojiani, 1997, The American journal of surgical pathology.

Pituitary carcinoma

B. Scheithauer, B. Guthrie, W. Young, 1997 .

Pituitary corticotroph adenoma in a woman with long-standing addison’s disease: A histologic, immunocytochemical, electron microscopic, andIn Situ hybridization study

R. Fahlbusch, K. Kovacs, M. Buchfelder, 1996, Endocrine pathology.

Pituitary adenoma with neuronal choristoma (PANCH): composite lesion or lineage infidelity?

B. Scheithauer, K. Kovacs, É. Horváth, 1994, Ultrastructural pathology.

Morphological effects of octreotide on growth hormone-producing pituitary adenomas.

A. Harris, K. Kovacs, É. Horváth, 1994, The Journal of clinical endocrinology and metabolism.

Congenital gigantism due to growth hormone-releasing hormone excess and pituitary hyperplasia with adenomatous transformation.

B. Scheithauer, N. Eberhardt, W. Young, 1993, The Journal of clinical endocrinology and metabolism.

Double adenomas of the pituitary: a clinicopathological study of 11 tumors.

B. Scheithauer, K. Kovacs, É. Horváth, 1992, Neurosurgery.

Multiple adenomas of the human pituitary. A retrospective autopsy study with clinical implications.

B. Scheithauer, K. Kovacs, É. Horváth, 1991, Journal of neurosurgery.

Silent somatotroph adenomas of the human pituitary. A morphologic study of three cases including immunocytochemistry, electron microscopy, in vitro examination, and in situ hybridization.

S. Asa, K. Kovacs, L. Ştefăneanu, 1989, The American journal of pathology.

A novel type of pituitary adenoma: morphological features and clinical correlations.

B. Scheithauer, E. Laws, K. Kovacs, 1988, The Journal of clinical endocrinology and metabolism.

Combined thyrotroph and lactotroph cell hyperplasia simulating prolactin-secreting pituitary adenoma in long-standing primary hypothyroidism.

B. Scheithauer, E. Laws, K. Kovacs, 1988, Surgical neurology.

Pathology of growth hormone-producing tumors of the human pituitary.

K. Kovacs, É. Horváth, 1986, Seminars in diagnostic pathology.

Plurihormonal pituitary adenomas.

B. Scheithauer, E. Laws, K. Kovacs, 1986, Seminars in diagnostic pathology.

Gonadotroph adenomas of the human pituitary: sex-related fine-structural dichotomy. A histologic, immunocytochemical, and electron-microscopic study of 30 tumors.

K. Kovacs, É. Horváth, 1984, The American journal of pathology.

Clinical and pathological effects of bromocriptine on prolactin-secreting and other pituitary tumors.

K. Kovacs, M. Thorner, É. Horváth, 1984, Journal of neurosurgery.

Pituitary adenomas producing growth hormone, prolactin, and one or more glycoprotein hormones: a histologic, immunohistochemical, and ultrastructural study of four surgically removed tumors.

B. Scheithauer, E. Laws, K. Kovacs, 1983, Ultrastructural pathology.

Adenohypophysitis in rat pituitary allografts

B. Scheithauer, S. Asa, K. Kovacs, 2008, International journal of experimental pathology.

Effect of dopamine agonist medication on prolactin producing pituitary adenomas

I. Lancranjan, R. Fahlbusch, K. Kovacs, 1991, Virchows Archiv A.

Expression of hypoxia-inducible factor-1alpha (HIF-1alpha) in pituitary tumours.

B. Scheithauer, K. Kovacs, É. Horváth, 2003, Histology and histopathology.

Juxtaposition of an ectopic corticotroph adenoma of the sphenoid sinus with orthotopic intrasellar corticotroph hyperplasia in a patient with Cushing disease. Case report.

J. Bilbao, K. Kovacs, É. Horváth, 2003, Journal of neurosurgery.

Cushing’s Syndrome from an ectopic pituitary adenoma with peliosis: A histological, immunohistochemical, and ultrastructural study and review of the literature

K. Kovacs, S. Ezzat, É. Horváth, 1997, Endocrine pathology.

Vascular alterations in adenomas of human pituitary glands. An electron microscopic study.

K. Kovacs, É. Horváth, 1973, Angiologica.

Ultrastructure of peliosis hepatis in a percutaneous biopsy.

K. Kovacs, É. Horváth, R. C. Ross, 1972, Pathologia Europaea.

Letter: Benign hepatoma in a young woman on contraceptive steroids.

K. Kovacs, É. Horváth, R. C. Ross, 1974, Lancet.

Folliculo-stellate Cells of the Human Pituitary as Adult Stem Cells: Examples of Their Neoplastic Potential

K. Kovacs, É. Horváth, H. Smyth, 2010, Ultrastructural pathology.

Functioning oxyphil cell adenoma of the parathyroid gland: evidence for parathyroid secretory activity of oxyphil cells.

É. Horváth, K. Kovács, T. Murray, 1974, The Journal of clinical endocrinology and metabolism.

Ultrastructure of three Hürthle cell tumors of the thyroid

K. Kovacs, É. Horváth, P. Feldman, 1972, Cancer.

Pituitary changes in ataxia-telangiectasia syndrome: An immunocytochemical,in situ hybridization, and DNA cytometric study of three cases

B. Scheithauer, K. Kovacs, R. Lloyd, 1997, Endocrine pathology.

Effect of estradiol on 7,12-dimethylbenz(a)anthracene-induced adrenocortical necrosis. A histochemical study.

K. Kovacs, Á. Somogyi, É. Horváth, 1971, Archiv fur Geschwulstforschung.

Clinically Silent Corticotroph Tumors of the Pituitary Gland

B. Scheithauer, F. Meyer, E. Laws, 2000, Neurosurgery.

Ultrastructure of two cases of anaplastic giant cell tumor of the human thyroid gland

K. Kovacs, É. Horváth, J. Gaal, 1974, Cancer.

Pituitary prolactin cell hyperplasia.

K. Kovacs, É. Horváth, G. Ilse, 1980, Hormone research.

Spontaneous pituitary adenomas in aging rats. A light microscopic, immunocytological and fine structural study.

K. Kovacs, É. Horváth, C. Ezrin, 1977, Beitrage zur Pathologie.

A case of sparsely granulated growth hormone cell adenoma associated with lymphocytic hypophysitis

É. Horváth, H. Smyth, J. Mcconnon, 1991, Journal of endocrinological investigation.

Hepatic lesion in systemic lupus erythematosus: cytoplasmic tubules in sinusoidal endothelium.

K. Kovacs, R. Warren, É. Horváth, 1972, JAMA.

Sex-linked ultrastructural dichotomy of gonadotroph adenomas of the human pituitary: an electron microscopic analysis of 145 tumors.

K. Kovacs, É. Horváth, G. Kontogeorgos, 1990, Ultrastructural pathology.

Pituitary adenomas associated with elevated blood follicle-stimulating hormone levels: a histologic, immunocytologic, and electron microscopic study of two cases.

K. Kovacs, É. Horváth, C. Ezrin, 1978, Fertility and sterility.

Gonadotropin secretion in vitro by human pituitary null cell adenomas and oncocytomas.

S. Asa, K. Kovacs, É. Horváth, 1986, The Journal of clinical endocrinology and metabolism.

Effect of cycloheximide on the fine structure of corpus luteum in intact and hypophysectomized rats

S. Szabó, É. Horváth, K. Kovács, 1973, Zeitschrift für Zellforschung und Mikroskopische Anatomie.

Malignant leydig cell tumor: Clinical, histologic and electron microscopic features

K. Kovacs, É. Horváth, P. S. Feldman, 1982, Cancer.

Necrotizing Infundibuloneurohypophysitis: Case Report and Literature Review

B. Scheithauer, K. Kovacs, M. Cusimano, 2012, Endocrine Pathology.

Leydig Cell Hyperplasia Due to a Testicular Embryonal Carcinoma Producing Human Chorionic Gonadotropin

S. Asa, K. Kovacs, É. Horváth, 2009, Andrologia.

Argyrophil organizer region proteins (AgNORs) in adenohypophysial cells and adenomas of the human pituitary.

K. Kovacs, L. Ştefăneanu, É. Horváth, 1989, Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc.

Salivary Gland-Like Tumor of the Sella

K. Kovacs, M. Cusimano, É. Horváth, 2007, Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques.

Antitumour effects of temozolomide in a man with a large, invasive prolactin‐producing pituitary neoplasm

K. Kovacs, C. Fadul, É. Horváth, 2006, Clinical endocrinology.

Pituitary blastoma: a pathognomonic feature of germ-line DICER1 mutations

P. Maeder, W. Foulkes, J. Warner, 2014, Acta Neuropathologica.

Pituitary blastoma

B. Scheithauer, K. Kovacs, R. Lloyd, 2008, Acta Neuropathologica.

Pathology of pituitary tumors.

K. Kovacs, É. Horváth, 1987, Endocrinology and metabolism clinics of North America.

Prolactin-producing pituitary tumor: resistance to dopamine agonist therapy. Case report.

R. Fahlbusch, K. Kovacs, M. Buchfelder, 1995, Journal of neurosurgery.

Incidence, pathology, and recurrence of pituitary adenomas: Study of 647 unselected surgical cases

K. Kovacs, L. Ştefăneanu, É. Horváth, 1995, Endocrine pathology.

Pituitary adenomas in childhood and adolescence.

B. Scheithauer, E. Bergstralh, E. Laws, 1994, The Journal of clinical endocrinology and metabolism.

Human prolactin-producing adenomas and bromocriptine: a histological, immunocytochemical, ultrastructural, and morphometric study.

K. Kovacs, M. Thorner, É. Horváth, 1982, The Journal of clinical endocrinology and metabolism.

Low Immunohistochemical Expression of MGMT in ACTH Secreting Pituitary Tumors of Patients with Nelson Syndrome

B. Scheithauer, K. Kovacs, W. Drake, 2010, Endocrine pathology.

Proliferative activity and invasiveness among pituitary adenomas and carcinomas: an analysis using the MIB-1 antibody.

B. Scheithauer, E. Laws, K. Kovacs, 1996, Neurosurgery.

Large clear cell adenoma of the parathyroid in a patient with MEN-1 syndrome. Ultrastructural study of the tumour exhibiting unusual RER formations.

K. Kovacs, É. Horváth, H. Matushita, 1994, Acta biologica Hungarica.

Gigantism due to pituitary mammosomatotroph hyperplasia.

S. Asa, K. Kovacs, J. Reubi, 1990, The New England journal of medicine.

Hormone secretion in vitro by plurihormonal pituitary adenomas of the acidophil cell line.

S. Asa, K. Kovacs, É. Horváth, 1992, The Journal of clinical endocrinology and metabolism.

Ultrastructural diagnosis of human pituitary adenomas

K. Kovacs, É. Horváth, 1992, Microscopy research and technique.

Analysis of endocrine active and clinically silent corticotropic adenomas by in situ hybridization.

K. Kovacs, L. Jin, R. Lloyd, 1990, The American journal of pathology.

Monomorphous plurihormonal adenoma of the human pituitary. A histologic, immunocytologic and ultrastructural study

K. Kovacs, I. Kourides, É. Horváth, 1984, Cancer.

Chapter 17 – Hypophysis

K. Kovacs, L. Ştefăneanu, É. Horváth, 2012 .

Prognostic Indicators in an Aggressive Pituitary Crooke's Cell Adenoma

B. Scheithauer, K. Kovacs, M. Cusimano, 2005, Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques.

Galectin-3 expression in functioning and silent ACTH-Producing adenomas

B. Scheithauer, K. Kovacs, R. Lloyd, 2005, Endocrine pathology.

An ultrastructural study of seven cardiac myxomas

K. Kovacs, É. Horváth, P. Feldman, 1977, Cancer.

Intrasellar paraganglioma associated with hypopituitarism.

J. Bilbao, K. Kovacs, É. Horváth, 1978, Archives of pathology & laboratory medicine.

An electron‐microscope study of the adreno‐cortical lesion induced by 7,12‐dimethyl‐benz(a)anthracene in rats

K. Kovacs, É. Horváth, D. Szabó, 1969, The Journal of pathology.

Histochemical study of the "adrenocortical lipid hyperplasia" induced in rats by aniline.

É. Horváth, K. Kovács, E. Yeghiayan, 1971, Acta histochemica.

Effects of propylthiouracil on growth hormone and prolactin messenger ribonucleic acids in the rat pituitary.

K. Kovacs, L. Jin, R. Lloyd, 1990, Laboratory investigation; a journal of technical methods and pathology.

[Effect of hemoconcentration on the gonadotrophic function of the pituitary gland in rats].

É. Horváth, K. Kovács, M. David, 1955, Endokrinologie.

Origin, possible function and fate of "follicular cells" in the anterior lobe of the human pituitary.

K. Kovacs, É. Horváth, G. Penz, 1974, The American journal of pathology.

Histologic, immunocytologic and subcellular changes in the rat adenohypophysis caused by prolactin, growth hormone and ACTH-producing transplanted pituitary tumors: a comparison with spontaneous prolactin-producing adenomas.

K. Kovacs, I. Bérczi, É. Nagy, 1980, Experimentelle Pathologie.

Immunohistochemical study on so‐called follicular cells and folliculostellate cells in the human adenohypophysis

Z. Qian, T. Sano, K. Kovacs, 2005, Pathology international.

Folliculo-stellate Cells of the Human Pituitary: A Type of Adult Stem Cell?

K. Kovacs, É. Horváth, 2002, Ultrastructural pathology.

S-100 protein immunopositivity in human nontumorous hypophyses and pituitary adenomas

K. Kovacs, L. Ştefăneanu, É. Horváth, 1992, Endocrine Pathology.

Double-labeling immunogold electron-microscopic study of hormonal colocalization in nontumorous and adenomatous rat pituitaries.

K. Kovacs, É. Horváth, N. E. Losinski, 1989, The American journal of anatomy.

Morphology of adenohypophysial cells and pituitary adenomas.

É. Horváth, 1994 .

Pituitary growth hormone cell adenoma with cytoplasmic tubular aggregates in the capillary endothelium

K. Kovacs, É. Horváth, M. L. Schwartz, 1977, Acta Neuropathologica.

Electron dense mitochondrial inclusions in a pituitary oncocytoma.

K. Kovacs, É. Horváth, S. Jalalah, 1985, Journal of submicroscopic cytology.

Neurocysticercosis, Meningioma, and Silent Corticotroph Pituitary Adenoma in a 61-Year-Old Woman

K. Kovacs, É. Horváth, F. Rotondo, 2012, Case reports in pathology.

Ultrastructural Classification of Pituitary Adenomas

K. Kovacs, É. Horváth, 1976, Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques.

Crystalline structures in the hyaloplasm of human liver cells.

É. Horváth, R. Lee, J. Little, 1973, Acta hepato-gastroenterologica.

Tumors in the Adenohypophysis

B. Scheithauer, K. Kovacs, É. Horváth, 2010 .

Stem Cells and Cancer Stem-Like Cells in Endocrine Tissues

K. Kovacs, R. Lloyd, É. Horváth, 2013, Endocrine Pathology.

Ultrastructural findings in a well-differentiated hepatoma.

K. Kovacs, É. Horváth, R. C. Ross, 1972, Digestion.

Effect of temporary ischemia on the fine structure of the rat adrenal cortex.

K. Kovacs, É. Horváth, 1973, Pathologia Europaea.

Immunohistochemical Expression of Pituitary Tumor Transforming Gene (PTTG) in Pituitary Adenomas: A Correlative Study of Tumor Subtypes

B. Scheithauer, K. Kovacs, R. Lloyd, 2010, International journal of surgical pathology.

Angiogenesis in normal and neoplastic pituitary tissues

B. Scheithauer, K. Kovacs, R. Lloyd, 2003, Microscopy research and technique.

Pituitary hyperplasia.

B. Scheithauer, K. Kovacs, É. Horváth, 1999, Pituitary.

Human fetal adenohypophysis. Electron microscopic and ultrastructural immunocytochemical analysis.

W. Halliday, S. Asa, K. Kovacs, 1988, Neuroendocrinology.

Human mixed somatotrophic and lactotrophic pituitary adenomas.

K. Kovacs, É. Horváth, B. Corenblum, 1976, The Journal of clinical endocrinology and metabolism.

Human Fetal Adenohypophysis

W. Halliday, S. Asa, K. Kovacs, 1986 .

Thyrotroph cell adenoma of the human pituitary gland associated with primary hypothyroidism: clinical and morphological features.

K. Kovacs, M. S. Katz, É. Horváth, 1980, Acta endocrinologica.

O‐Methylguanine‐DNA Methyltransferase Immunoexpression in a Double Pituitary Adenoma: Case Report

B. Scheithauer, K. Kovacs, M. Cusimano, 2010, Neurosurgery.

A Double Pituitary Adenoma Presenting as a Prolactin-secreting Tumor with Partial Response to Medical Therapy. Case report

K. Kovacs, É. Horváth, H. Smyth, 2010, Endocrine pathology.

Double adenoma of the pituitary: A somatotroph adenoma colliding with a gonadotroph adenoma

K. Kovacs, É. Horváth, L. Syro, 2000, Journal of endocrinological investigation.

Pituitary adenomas in old age.

K. Kovacs, É. Horváth, C. Ezrin, 1980, Journal of gerontology.

`Spindle Cell Oncocytoma' of the Adenohypophysis: A Tumor of Folliculostellate Cells?

B. Scheithauer, K. Kovacs, R. Lloyd, 2002, The American journal of surgical pathology.

Pituitary adenomas of the multiple endocrine neoplasia type I syndrome.

B. Scheithauer, E. Laws, K. Kovacs, 1987, Seminars in diagnostic pathology.

Effect of protracted estrogen administration on the thyroid of Ames dwarf mice

K. Kovacs, A. Bartke, É. Horváth, 2001, Cell and Tissue Research.

Microvascular structural entropy: A novel approach to assess angiogenesis in pituitary tumors

K. Kovacs, É. Horváth, Kalman Kovacs, 2003, Endocrine pathology.

Temozolomide in aggressive pituitary adenomas and carcinomas

B. Scheithauer, K. Kovacs, C. Fadul, 2012, Clinics.

Treatment of Aggressive Pituitary Adenomas and Carcinomas – An Overview

K. Kovacs, É. Horváth, F. Rotondo, 2012 .

Renal angiomyolipoma: ultrastructural study.

K. Kovacs, É. Horváth, A. Chalvardjian, 1978, Urology.

ACTH‐secreting Crooke cell carcinoma of the pituitary

B. Scheithauer, S. Czirják, K. Kovacs, 2013, European journal of clinical investigation.

Treatment of pituitary neoplasms with temozolomide

B. Scheithauer, K. Kovacs, R. Lloyd, 2011, Cancer.

Pathology of pituitary adenomas.

K. Kovacs, É. Horváth, 1977, Bulletin of the Los Angeles neurological societies.

Pituitary adenoma producing growth hormone and adrenocorticotropin: a histological, immunocytochemical, electron microscopic, and in situ hybridization study. Case report.

J. Bilbao, K. Kovacs, L. Ştefăneanu, 1998, Journal of neurosurgery.

Pathology of pituitary tumors.

B. Scheithauer, K. Kovacs, R. Lloyd, 2003, Neurosurgery clinics of North America.

Humoral hypercalcemia of malignancy due to bipartite squamous cell/small cell carcinoma of the esophagus immunoreactive for parathyroid hormone related protein.

K. Kovacs, É. Horváth, F. Fereidooni, 2003, Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus.

Multiple endocrine neoplasia type 1-associated thyrotropin-producing pituitary carcinoma: report of a probable de novo example.

B. Scheithauer, K. Kovacs, R. Lloyd, 2009, Human pathology.

Changes in hormone production of a recurrent silent corticotroph adenoma of the pituitary: a histologic, immunohistochemical, ultrastructural, and tissue culture study.

S. Asa, K. Kovacs, É. Horváth, 1991, Human pathology.

Morphometric evidence of sexual dimorphism in the ultrastructure of gonadotroph adenomas of the human pituitary.

K. Kovacs, É. Horváth, D. McComb, 1985, Ultrastructural pathology.

Pathobiology of Pituitary Adenomas and Carcinomas

B. Scheithauer, F. Meyer, W. Young, 2006, Neurosurgery.

Silent Corticotroph Carcinoma of the Adenohypophysis

B. Scheithauer, W. Young, K. Kovacs, 2003 .

The world health organization classification of adenohypophysial neoplasms: A proposed five‐tier scheme

B. Scheithauer, K. Kovacs, R. Lloyd, 1996, Cancer.

Gonadotroph adenoma of the pituitary gland: a clinicopathologic analysis of 100 cases.

B. Scheithauer, W. Young, K. Kovacs, 1996, Mayo Clinic proceedings.

Plurihormonal pituitary adenoma immunoreactive for thyroid-stimulating hormone, growth hormone, follicle-stimulating hormone, and prolactin.

G. Booth, K. Kovacs, M. Cusimano, 2012, Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists.

Plurihormonality in pituitary adenomas associated with acromegaly

S. Asa, K. Kovacs, É. Horváth, 2006, Endocrine pathology.

Composite Somatotroph—ACTH-Immunoreactive Pituitary Adenoma with Transformation of Hyperplasia to Adenoma

K. Kovacs, É. Horváth, G. Kontogeorgos, 2001, Pituitary.

Tumors of the Adenohypophysis

B. Scheithauer, K. Kovacs, É. Horváth, 2004 .

Neural transformation in a pituitary corticotroph adenoma

K. Kovacs, H. Shahinian, É. Horváth, 2002, Acta Neuropathologica.

Pathology of prolactin cell adenomas of the human pituitary.

K. Kovacs, É. Horváth, 1986, Seminars in diagnostic pathology.

Classification of pituitary adenomas

K. Kovacs, É. Horváth, S. Vidal, 2001, Journal of Neuro-Oncology.

Effects of Medical Therapy on Pituitary Tumors

K. Kovacs, É. Horváth, 2005, Ultrastructural pathology.

Antiproliferative effect of the somatostatin analogue octreotide on growth hormone-producing pituitary tumors: results of a multicenter randomized trial.

B. Scheithauer, E. Laws, K. Kovacs, 1997, Mayo Clinic proceedings.

Structure-function correlations of human pituitary gonadotroph adenomas in vitro.

S. Asa, K. Kovacs, É. Horváth, 1988, Laboratory investigation; a journal of technical methods and pathology.

Gonadotrophs following removal of the ovaries: a fine structural study of human pituitary glands.

K. Kovacs, É. Horváth, 1975, Endokrinologie.

Cytoplasmic microfilaments in the anterior lobe of the human pituitary gland.

K. Kovacs, É. Horváth, C. Ezrin, 1974, Acta anatomica.

Pituitary Melanocorticotrophinoma with Amyloid Deposition

K. Kovacs, J. Bilbao, É. Horváth, 1975, Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques.

Massive Crooke's hyalinization in corticotroph cell adenomas of the human pituitary

K. Kovacs, É. Horváth, I. Félix, 1981, Acta Neurochirurgica.

Growth hormone (GH) and prolactin (PRL) gene expression and immunoreactivity in GH- and PRL-producing human pituitary adenomas

K. Kovacs, L. Ştefăneanu, É. Horváth, 2005, Virchows Archiv A.

Ultrastructural markers in the pathologic diagnosis of pituitary adenomas.

É. Horváth, 1994, Ultrastructural pathology.

Misplaced exocytosis. Distinct ultrastructural feature in some pituitary adenomas.

K. Kovacs, É. Horváth, 1974, Archives of pathology.

Pituitary adenoma producing amyloid-like substance.

J. Bilbao, K. Kovacs, É. Horváth, 1975, Archives of pathology.

An immunohistochemical and ultrastructural comparison of the effects of 2-bromo-α-ergocryptine on intrasellar and transplanted rat pituitaries

É. Horváth, N. Ryan, K. Kovács, 1979, Experientia.

Morphological study of clinically nonsecreting pituitary adenomas in patients under 40 years of age.

K. Kovacs, É. Horváth, T. Aiba, 1991, Journal of neurosurgery.

Null cell adenoma of the pituitary with features of plurihormonality and plurimorphous differentiation.

K. Kovacs, É. Horváth, H. Smyth, 1991, Archives of pathology & laboratory medicine.

Mammosomatotroph hyperplasia associated with acromegaly and hyperprolactinemia in a patient with the McCune-Albright syndrome

K. Kovacs, A. Rogol, M. Thorner, 2004, Virchows Archiv A.

Pituitary "chromophobe" adenoma composed of oncocytes. A light and electron microscopic study.

K. Kovacs, É. Horváth, 1973, Archives of pathology.

Primary Pituitary Lymphoma: A Histological, Immunohistochemical, and Ultrastructural Study with Literature Review

B. Scheithauer, J. Juco, K. Kovacs, 2009, Endocrine pathology.

Ganglioglioma of the Neurohypophysis

B. Scheithauer, J. Parisi, K. Kovacs, 2008, Endocrine pathology.

Centrioles and cilia in non-tumourous anterior lobes and adenomas of the human pituitary.

K. Kovacs, É. Horváth, C. Ezrin, 1976, Pathologia Europaea.

Pituitary Ganglioneuroma: Case Report and Literature Review

B. Scheithauer, K. Kovacs, A. Sav, 2013 .

Immunocytochemical localization of mast cells in lymphocytic hypophysitis.

B. Scheithauer, K. Kovacs, É. Horváth, 2002, American journal of clinical pathology.

Pituitary blastoma: a unique embryonal tumor

B. Scheithauer, K. Kovacs, R. Lloyd, 2012, Pituitary.

Collision Tumors of the Sella: Craniopharyngioma and Silent Pituitary Adenoma Subtype 3: Case Report

B. Scheithauer, K. Kovacs, É. Horváth, 2009, Endocrine pathology.

Silent subtype 3 carcinoma of the pituitary: a case report

B. Scheithauer, K. Kovacs, É. Horváth, 2010, Neuropathology and applied neurobiology.

Anti-VEGF therapy in pituitary carcinoma

B. Scheithauer, K. Kovacs, C. Fadul, 2012, Pituitary.

Cytogenesis of nonfunctioning pituitary adenomas

S. Asa, K. Kovacs, É. Horváth, 1991, Endocrine Pathology.

Three cases of a hitherto unrecognized pituitary tumour: it is caused by maternal exposure to unidentified factor(s) during pregnancy?

K. Kovacs, É. Horváth, 1998, Clinical endocrinology.

Tumefactive Postmenopausal Gonadotroph Cell Hyperplasia

B. Scheithauer, K. Kovacs, M. Jentoft, 2012, Endocrine Pathology.

Pituitary corticotroph hyperplasia preceding adenoma in a patient with Nelson's syndrome.

B. Scheithauer, K. Kovacs, M. Cusimano, 2006, Clinical neuropathology.

Silent Somatotroph Adenoma of the Pituitary in an Adolescent

B. Scheithauer, K. Kovacs, M. Cusimano, 2009, Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques.

Impact of Technique on Cushing Disease Outcome Using Strict Remission Criteria

R. Macdonald, K. Kovacs, M. Cusimano, 2013, Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques.

Prolactin cells of the human pituitary gland in old age.

K. Kovacs, É. Horváth, G. Penz, 1977, Journal of gerontology.

Ectopic Prolactin-Producing Pituitary Adenoma in a Benign Ovarian Cystic Teratoma

K. Kovacs, J. Karamchandani, É. Horváth, 2014, Endocrine Pathology.

Prolactin Cell Adenomas of the Human Pituitary. Morphologic Features of Prolactin Cells in the Nontumorous Portions of the Anterior Lobe

K. Kovacs, É. Horváth, G. Penz, 1978, Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme.

In vivo responsiveness of morphological variants of growth hormone-producing pituitary adenomas to octreotide.

A. Harris, D. Redelmeier, K. Kovacs, 1995, European journal of endocrinology.

Coexisting corticotroph and lactotroph adenomas: case report with reference to the relationship of corticotropin and prolactin excess.

B. Scheithauer, W. Young, K. Kovacs, 1992, Neurosurgery.

Coexisting Corticotroph and Lactotroph Adenomas

B. Scheithauer, W. Young, K. Kovacs, 1992 .

Pituitary adenomas that produce adrenocorticotropic hormone and alpha-subunit: clinicopathological, immunohistochemical, ultrastructural, and immunoelectron microscopic studies in nine cases.

B. Scheithauer, E. Laws, K. Kovacs, 1990, Neurosurgery.

Asynchronous pituitary adenomas with differing morphology.

K. Kovacs, S. Ezzat, É. Horváth, 1995, Archives of Pathology & Laboratory Medicine.

Recurrent plurihormonal bimorphous pituitary adenoma producing growth hormone, thyrotropin, and prolactin.

S. Asa, K. Kovacs, É. Horváth, 1994, Archives of pathology & laboratory medicine.

Oncocytes in the anterior lobe of the human pituitary gland

K. Kovacs, É. Horváth, J. M. Bilbao, 1974, Acta Neuropathologica.

Gonadotroph adenoma of the pituitary mimicking a prolactinoma.

K. Kovacs, M. Hara, Y. Shishiba, 1991, Neurosurgery.

Prolactin-producing pituitary adenoma associated with prolactin cell hyperplasia

K. Kovacs, É. Horváth, L. Syro, 2002, Endocrine pathology.

Microvessel density in pituitary adenomas and carcinomas

B. Scheithauer, K. Kovacs, R. Lloyd, 2001, Virchows Archiv.

Relationship between microbodies and the endoplasmic reticulum in the liver of adult rats.

K. Kovacs, É. Horváth, J. A. Blascheck, 1971, Acta anatomica.

Cytology of Pituitary Thyrotroph Hyperplasia in Protracted Primary Hypothyroidism

J. Bilbao, K. Kovacs, M. Cusimano, 1999, Pituitary.

A new look at pituitary adenomas: structure elucidating function.

K. Kovacs, É. Horváth, B. Corenblum, 1976, Canadian Medical Association journal.

Correlative ultrastructural morphometry of human prolactin-producing adenomas

K. Kovacs, É. Horváth, C. Ezrin, 2005, Acta Neurochirurgica.

Fine structural features of secretion in adenomas of human pituitary gland.

K. Kovacs, É. Horváth, D. Ryder, 1980, Archives of pathology & laboratory medicine.

Acidophil stem cell adenoma of the human pituitary.

K. Kovacs, É. Horváth, C. Ezrin, 1976, Archives of pathology & laboratory medicine.

Mammosomatotroph adenoma of the pituitary associated with gigantism and hyperprolactinemia. A morphological study including immunoelectron microscopy

K. Kovacs, É. Horváth, H. Smyth, 2004, Acta Neuropathologica.

Fine structure and morphogenesis of spironolactone bodies in the zona glomerulosa of the human adrenal cortex

K. Kovacs, É. Horváth, W. Singer, 1973, Journal of clinical pathology.

Pituitary Hyperplasia

B. Scheithauer, K. Kovacs, É. Horváth, 2004, Pituitary.

Growth hormone‐releasing hormone (GHRH) and GHRH receptor (GHRH‐R) isoform expression in ectopic acromegaly

S. Asa, K. Kovacs, S. Ezzat, 2001, Clinical endocrinology.

Pathology of excessive production of growth hormone.

B. Scheithauer, E. Laws, K. Kovacs, 1986, Clinics in endocrinology and metabolism.

The pituitary in turner syndrome

B. Scheithauer, W. Young, K. Kovacs, 2005, Endocrine pathology.

Effect of intravenous infusion of growth hormone-releasing hormone on the morphology of rat pituitary somatotrophs

K. Kovacs, L. Ştefăneanu, É. Horváth, 1993, Endocrine Pathology.

Hyperprolactinemia. Morphologic and clinical considerations.

K. Kovacs, É. Horváth, C. Ezrin, 1978, The Medical clinics of North America.

Protocol for the examination of specimens from patients with primary pituitary tumors.

E. Laws, S. Asa, K. Kovacs, 2011, Archives of pathology & laboratory medicine.

Annulate lamellae in spontaneous prolactin cell adenomas of the rat pituitary.

J. Bilbao, K. Kovacs, É. Horváth, 1977, Anatomischer Anzeiger.

Nuclear inclusions in the human adenohypophysis

K. Kovacs, É. Horváth, D. Ryder, 1979 .

Intracisternal virus-like particles in a human pituitary adenoma

K. Kovacs, É. Horváth, N. Kerenyi, 1976, Zeitschrift für Krebsforschung und Klinische Onkologie.

Melanoma of the sellar region mimicking pituitary adenoma

B. Scheithauer, K. Kovacs, É. Horváth, 2013, Neuropathology : official journal of the Japanese Society of Neuropathology.

Ultrastructural features of corticomedullary cells in a human adrenocortical adenoma and in rat adrenal cortex.

K. Kovacs, É. Horváth, 1973, Anatomischer Anzeiger.

Undifferentiated Sarcoma of the Sellar Region

B. Scheithauer, K. Kovacs, M. Cusimano, 2011, Endocrine pathology.

Immunohistochemical expression of nestin in adenohypophysial vessels during development of pituitary infarction.

B. Scheithauer, K. Kovacs, M. Cusimano, 2008, Journal of neurosurgery.

Adrenomedullin expression in pituitary adenomas and nontumoral adenohypophyses.

B. Scheithauer, K. Kovacs, É. Horváth, 2008, Histology and histopathology.

Pathogenesis of experimental adrenal hemorrhagic necrosis ("apoplexy"): ultrastructural, biochemical, neuropharmacologic, and blood coagulation studies with acrylonitrile in the rat.

S. Szabó, K. Kovacs, É. Horváth, 1980, Laboratory investigation; a journal of technical methods and pathology.

Adenohypophysial necrosis in rats following destruction of the pituitary stalk. A histologic, immunocytologic and fine structural study.

J. Bilbao, É. Nagy, É. Horváth, 1977, Experimentelle Pathologie.

Plurihormonal bronchial carcinoid associated with ectopic Cushing’s syndrome

K. Kovacs, É. Horváth, H. Smyth, 1999, Endocrine pathology.

Fine structural changes in the liver of methotrexate-treated psoriatics.

K. Kovacs, É. Horváth, F. Saibil, 1978, Digestion.

A functional anatomy of the endocrine hypothalamus and hypophysis.

K. Kovacs, É. Horváth, C. Ezrin, 1978, The Medical clinics of North America.

Ectopic ACTH syndrome : clinicopathological correlations 597

K. Kovacs, É. Horváth, W. Singer, 2005 .

Effect of starvation on pituitary growth hormone cells and blood growth hormone and prolactin levels in the rat.

K. Kovacs, É. Horváth, A. Sirek, 1976, Nutrition and Metabolism.

Pituitary choristoma composed of corticotrophs and adrenocortical cells in the sella turcica

K. Kovacs, H. Sasano, T. Kameya, 1996, Virchows Archiv.

A composite silent corticotroph pituitary adenoma with interspersed adrenocortical cells: case report.

D. Feig, K. Kovacs, H. Sasano, 1998, Neurosurgery.

The differential diagnosis of lesions involving the sella turcica

K. Kovacs, É. Horváth, 2001, Endocrine pathology.

Non-uniform Response to Temozolomide Therapy in a Pituitary Gonadotroph Adenoma

B. Scheithauer, K. Kovacs, É. Horváth, 2012, Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques.

Adenoma of the human pituitary producing growth hormone and thyrotropin

K. Kovacs, É. Horváth, C. Ezrin, 1982, Virchows Archiv A.

Subcellular features of alcoholic liver lesion: Alcoholic hyalin

K. Kovacs, É. Horváth, R. C. Ross, 1973, The Journal of pathology.

Endoglin and CD-34 immunoreactivity in the assessment of microvessel density in normal pituitary and adenoma subtypes.

B. Scheithauer, K. Kovacs, M. Cusimano, 2010, Neoplasma.

Prolactin-producing pituitary adenoma with incomplete neuronal transformation: an intermediate adenoma–neuronal tumor

K. Kovacs, É. Horváth, G. Kontogeorgos, 2004, Acta Neuropathologica.

Ganglion cells in the posterior pituitary: result of ectopia or transdifferentiation?

B. Scheithauer, K. Kovacs, É. Horváth, 2000, Acta Neuropathologica.

Morphologically unclassified GH-producing adenoma showing galactorrhea without acromegaly

S. Yamada, K. Kovacs, L. Ştefăneanu, 1993, Endocrine Pathology.

Light and electron microscopic features of a pituitary adenoma in Nelson's syndrome.

K. Kovacs, É. Horváth, N. Kerenyi, 1976, American journal of clinical pathology.

Ultrastructural features of an aldosterone-secreting adrenocortical adenoma.

K. Kovacs, É. Horváth, N. Delarue, 1974, Hormone Research.

[Myocardial changes in rats following bilateral nephrectomy. A histochemical and electron microscopic study].

K. Kovacs, Á. Somogyi, É. Horváth, 1970, Beitrage zur pathologischen Anatomie und zur allgemeinen Pathologie.

Gonadotroph cell adenoma of the pituitary in a woman with long-standing hypogonadism

K. Kovacs, É. Horváth, C. Ezrin, 2005, Archives of gynecology.

Liver ultrastructure in methotrexate treatment of psoriasis.

K. Kovacs, É. Horváth, R. C. Ross, 1973, Archives of dermatology.

Pituicytoma of the Neurohypophysis: Analysis of Cell Proliferation Biomarkers

K. Kovacs, J. Karamchandani, É. Horváth, 2012, Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques.

Enhanced responsiveness of lactotrophs in ectopic pituitaries to bromocryptine and estrone acetate.

É. Horváth, N. Ryan, K. Kovács, 1981, Acta anatomica.

Intrasellar solitary plasmacytoma terminating in multiple myeloma: a report of a case including electron microscopical study.

J. Bilbao, K. Kovacs, É. Horváth, 1980, Surgical neurology.

Pituitary carcinoma: a clinicopathologic study of 15 cases.

B. Scheithauer, B. Guthrie, K. Kovacs, 1997, Cancer.

MGMT Immunoexpression in Silent Subtype 3 Pituitary Adenomas: Possible Therapeutic Implications

R. McLendon, B. Scheithauer, K. Kovacs, 2010, Endocrine pathology.

Pituitary corticotroph cell adenoma with marked abundance of microfilaments.

K. Kovacs, R. Josse, É. Horváth, 1983, Ultrastructural pathology.

Adenohypophysitis in rat pituitary allografts

K. Kovacs, I. Bérczi, É. Horváth, 2010, International journal of experimental pathology.

[Hypothalamic-pituitary relations of the withdrawal of fluid in rats].

É. Horváth, K. Kovács, D. Bachrach, 1954, Endokrinologie.

Microvascular structural entropy: A novel approach to assess angiogenesis in pituitary tumors

B. Scheithauer, K. Kovacs, É. Horváth, 2003, Endocrine pathology.

Effect of treatment with octreotide on the morphology of growth hormone—secreting pituitary adenomas: Study of 24 cases

K. Kovacs, É. Horváth, A. Beckers, 1991, Endocrine Pathology.

Ordered Phosphorylation Governs Oscillation of a Three-Protein Circadian Clock

Yusuke Nakamura, B. Scheithauer, C. Larsson, 2007 .

'Spindle cell oncocytoma' of the adenohypophysis: a tumor of folliculostellate cells?

B. Scheithauer, K. Kovacs, R. Lloyd, 2002, The American journal of surgical pathology.

Effects of spaceflight on morphology of the rat adenohypophysis.

K. Kovacs, L. Ştefăneanu, É. Horváth, 1994, Journal of applied physiology.

Acidophil Stem Cell Adenoma of the Human Pituitary: A New Entity

K. Kovacs, É. Horváth, C. Ezrin, 1976 .