B. Helpap

B. Helpap, V. Grouls, 1978, Research in experimental medicine. Zeitschrift fur die gesamte experimentelle Medizin einschliesslich experimenteller Chirurgie.

TUR-prostatitis. Histological and immunohistochemical observations on a special type of granulomatous prostatitis.

B. Helpap, J. Vogel, 1986, Pathology, research and practice.

Morphologic and cell kinetic investigations of the cryolesion.

B. Helpap, 1990, Clinics in dermatology.

Retroperitoneal and inguinal manifestation of malignant fibrous histiocytoma.

B. Helpap, D. Koischwitz, H. Adolphs, 1982, Urology.

Nonepithelial neoplasms of the urinary bladder

B. Helpap, 2001, Virchows Archiv.

Electron-microscopic study of the development of the periarteriolar zone in splenic white pulp of rats

B. Helpap, V. Grouls, G. Klingmüller, 2005, Cell and Tissue Research.

Nucleolar and AgNOR-analysis of prostatic intraepithelial neoplasia (PIN), atypical adenomatous hyperplasia (AAH) and prostatic carcinoma.

B. Helpap, C. Riede, 1995, Pathology, research and practice.

Observations on the number, size and localization of nucleoli in hyperplastic and neoplastic prostatic disease

B. Helpap, 1988, Histopathology.

Nucleolar and argyrophilic nucleolar organizer region counts in urothelial carcinomas with special emphasis on grade II tumors

B. Helpap, A. Bulatko, L. Loesevitz, 2004, Virchows Archiv.

Nucleolar grading of breast cancer

B. Helpap, 1989, Virchows Archiv A.

Immunohistochemical localization of chromogranins A and B and secretogranin II in normal, hyperplastic and neoplastic prostate

M. Tötsch, W. Böcker, K. Schmid, 1994, Histopathology.

The granulocytopoiesis in the spleen of newborn rats

B. Helpap, V. Grouls, 1980, Research in experimental medicine. Zeitschrift fur die gesamte experimentelle Medizin einschliesslich experimenteller Chirurgie.

Atypical adenomatous hyperplasia , atypical small acinar proliferation and prostatic adenocarcinoma

S. Hailemariam, B. Helpap, J. Kollermann, 2003 .

Atypical Hyperplasia, Intraepithelial Neoplasia, and Incidental Carcinoma of the Prostate

B. Helpap, 1991 .

Treated prostatic carcinoma. Histological, immunohistochemical and cell kinetic studies.

B. Helpap, 1985, Applied pathology.

[Autoradiographic investigation on granulation tissue with radioactive and nonradioactive thymidine].

B. Helpap, H. Creamer, 1972, Virchows Archiv. B, Cell pathology.

[Autoradiographic investigations of thymidine incorporation after long-time incubation of rat liver].

B. Helpap, V. Grouls, R. Stiens, 1973, Histochemie. Histochemistry. Histochimie.

Comparison between cell kinetical and immunohistochemical studies on carcinoma and atypia/dysplasia of urinary bladder mucosa

P. Oehr, B. Helpap, J. Vogel, 2004, Virchows Archiv A.

Sirenomelia and anencephaly in one of dizygotic twins.

B. Helpap, H. Schwaibold, N. Böhm, 1986, Teratology.

Molecular pathology of non-invasive urothelial carcinomas (part I)

P. Hamilton, K. Kurth, B. Schmitz-Dräger, 2003, Virchows Archiv.

Grading and prognostic significance of urologic carcinomas.

B. Helpap, 1992, Urologia internationalis.

Nucleolar grading of renal cancer. Correlation of frequency and localization of nucleoli to histologic and cytologic grading and stage of renal cell carcinomas.

B. Helpap, J. Knüpffer, S. Essmann, 1990, Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc.

Neuroendocrine Differentiation in Prostatic Carcinomas: Histogenesis, Biology, Clinical Relevance, and Future Therapeutical Perspectives

J. Köllermann, B. Helpap, U. Oehler, 1999, Urologia Internationalis.

Undifferentiated carcinoma of the prostate with small cell features: immunohistochemical subtyping and reflections on histogenesis

J. Köllermann, B. Helpap, 1999, Virchows Archiv.

[Endocrine differentiated prostate cancer. Histology and immunohistochemistry].

B. Helpap, R. Bollmann, U. Oehler, 1990, Der Pathologe.

Megakaryocytopoiesis in the spleen of growing rats.

B. Helpap, V. Grouls, 1980, The American journal of anatomy.

Cell composition of the red pulp of mice. II. Electronmicroscopic and autoradiographic investigations on megakaryocytes

K. Yamashita, B. Helpap, 1974 .

[Uterine leiomyosarcoma with subsequent pregnancy].

B. Helpap, W. Schmidt, M. Friedrich, 1998, Zentralblatt fur Gynakologie.

Consensus statement on terminology: recommendation to use atypical adenomatous hyperplasia in place of adenosis of the prostate.

D. Bostwick, D. Grignon, P. Humphrey, 1994, Human pathology.

Assessment of basal cell status and proliferative patterns in flat and papillary urothelial lesions: a contribution to the new WHO classification of the urothelial tumors of the urinary bladder.

J. Köllermann, B. Helpap, 2000, Human pathology.

Limiting the diagnosis of atypical small glandular proliferations in needle biopsies of the prostate by the use of immunohistochemistry

J. Köllermann, B. Helpap, U. Oehler, 2001, The Journal of pathology.

The significance of the P504S expression pattern of high-grade prostatic intraepithelial neoplasia (HGPIN) with and without adenocarcinoma of the prostate in biopsy and radical prostatectomy specimens

B. Helpap, 2006, Virchows Archiv.

Differential diagnosis of glandular proliferations in the prostate

B. Helpap, 1998, Virchows Archiv.

Workgroup 1: Origins of prostate cancer

D. Bostwick, P. Troncoso, R. Montironi, 1996 .

Cell-kinetical analyses of squamous cell carcinomas of the oral region and the effect of a combined therapy of 5 fluorouracil and irradiation. A contribution to the discussion about tumorcell-synchronization.

M. Thelen, B. Helpap, C. Herberhold, 1977, Strahlentherapie.

The cell proliferation of epithelial metaplasia in the prostate gland

B. Helpap, R. Stiens, 1975, Virchows Archiv. B, Cell pathology.

Osteoclast-like giant cell tumour of the pancreas presenting as a pseudocyst-like lesion

G. Klöppel, B. Helpap, M. Jürs, 1997, Virchows Archiv.

Comparative immunocytochemical assessment of isolated carcinoma cells in lymph nodes and bone marrow of patients with clinically localized prostate cancer

J. Köllermann, K. Pantel, B. Helpap, 1999, International journal of cancer.

[Pulmonary rhabdomyosarcoma (author's transl)].

B. Helpap, V. Grouls, 1976, Thoraxchirurgie, vaskulare Chirurgie.

Influence of partial hepatectomy on the megakaryocytopoiesis of the spleen

B. Helpap, V. Grouls, 1978, Research in experimental medicine. Zeitschrift fur die gesamte experimentelle Medizin einschliesslich experimenteller Chirurgie.

Single ventricle (Cor triloculare biatriatum) Eine Kasuistik

B. Helpap, G. Roos, M. Rodríguez, 1998, Der Pathologe.

Malignant papillomatosis of the intrahepatic bile ducts.

B. Helpap, 1977, Acta hepato-gastroenterologica.

Lethal complications in a case of sigmoid diverticulitis. A case report.

B. Helpap, H. Jenss, A. Bulatko, 1997, General & diagnostic pathology.

Neuroendocrine carcinomas of the prostate and urinary bladder: a diagnostic and therapeutic challenge

G. Klöppel, B. Helpap, 2002, Virchows Archiv.

[Extra-adrenal paraganglioma of the urinary bladder].

B. Helpap, O. Köster, W. Distelmaier, 1982, RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin.

Tissue culture, electron microscopic and enzyme histochemical investigations of extraadrenal paragangliomas.

B. Helpap, F. Gullotta, 1976, Pathologia Europaea.

Tissue reparation of the liver after thermo- and cryosurgical lesions: comparative cell analytical investigation.

B. Helpap, V. Grouls, 1979, Cryobiology.

[Metastatic glioblastoma with transverse myelitis symptoms. Histologic and immunohistochemical analyses].

B. Helpap, U. Hettmannsperger, J. Knüpffer, 1989, Der Pathologe.

The significance of the imprint cytology in breast biopsy diagnosis.

B. Helpap, K. Tschubel, 1978, Acta cytologica.

Repair of gastric ulcer

T. Hattori, B. Helpap, P. Gedigk, 1981, Virchows Archiv.

Wound healing of the brain of rats after cryonecrosis

S. Cappel, B. Helpap, K. Sturm, 1976, Virchows Archiv. B, Cell pathology.

[Wound healing of kidney after cryonecrosis. Autoradiographic investigations with 3H-thymidine on rats (authors transl)].

B. Helpap, A. Minderjahn, S. Lymberopoulos, 1974, Virchows Archiv. A, Pathological anatomy and histology.

[Autoradiographic, histological and histochemical studies on livers of rats following local freezing].

B. Helpap, S. Lymberopoulos, H. Breining, 1973, Beitrage zur Pathologie.

Relationship between atypical adenomatous hyperplasia (AAH), prostatic intraepithelial neoplasia (PIN) and prostatic adenocarcinoma.

D. Bostwick, P. Troncoso, R. Montironi, 1997, Pathologica.

[Studies of the effects of pulmonary and central nervous system disturbances of respiration on the cell pattern of the human carotid body].

B. Helpap, 1967, Virchows Archiv fur pathologische Anatomie und Physiologie und fur klinische Medizin.

Thymus in myasthenia gravis: a light and electron microscopic study of a case with thymic follicular hyperplasia.

V. Totović, B. Helpap, V. Grouls, 1984, Pathology, research and practice.

The proliferative pattern of the prostatic carcinoma before and under hormonal treatment

B. Helpap, R. Stiens, P. Brühl, 1976, Zeitschrift für Krebsforschung und Klinische Onkologie.

Proliferative pattern of exophytic and superficially invasive and noninvasive low-grade urothelial carcinomas.

J. Köllermann, B. Helpap, 1999, Human pathology.

[Route of infection of the biliary tract: experimental evidence for an enterohepaticobiliary bacterial cycle (author's transl)].

B. Helpap, E. Hancke, G. Marklein, 1980, Langenbecks Archiv fur Chirurgie.

Morphological Changes in the Terminal Oesophagus with Varices, Following Sclerosis of the Wall

L. Bollweg, B. Helpap, 1981, Endoscopy.

[Morphology of the lower esophagus after endoscopic varicosclerosation (author's transl)].

B. Helpap, H. Hansen, U. Kunath, 1981, Langenbecks Archiv fur Chirurgie.

[Comparative histologic studies following esophageal varices sclerosing with different substances].

B. Helpap, H. Hansen, 1983, Leber, Magen, Darm.

[Topical tissue freezing and its healing in liver and kidney].

B. Helpap, S. Lymberopoulos, H. Breining, 1972, Deutsche medizinische Wochenschrift.

The parenchymal reaction of the kidney after local freezing

B. Helpap, A. Minderjahn, S. Lymberopoulos, 2004, Urological research.

Morphologic and cell kinetic investigations of the spleen after repeated in situ freezing of liver and kidney.

B. Helpap, V. Grouls, S. Lymberopoulos, 1979, Pathology, research and practice.

[Ultrastructure of early changes in circumscribed cryonecrosis of the liver (author's transl)].

V. Totović, B. Helpap, P. Schattenberg, 1978, Pathology, research and practice.

The wound healing of the liver after thermonecrosis. Autoradiographical investigations with3H-thymidine on rats

B. Helpap, V. Grouls, F. Johaentges, 1977, Research in experimental medicine. Zeitschrift fur die gesamte experimentelle Medizin einschliesslich experimenteller Chirurgie.

Cell kinetic investigations of the thymus after different tissue lesions in parenchymal organs

B. Helpap, V. Grouls, 1980, Virchows Archiv. B, Cell pathology including molecular pathology.

The proliferative response of the spleen in cryosurgery.

K. Yamashita, B. Helpap, V. Grouls, 1976, Cryobiology.

Histological and autoradiographic findings in cryonecrosis of the liver and kidney.

B. Helpap, A. Minderjahn, S. Lymberopoulos, 1974, Cryobiology.

[Pathological anatomical consequences of wedge resection of the liver].

B. Helpap, 1973, Deutsche medizinische Wochenschrift.

Modified Gleason grading. An updated review.

L. Egevad, B. Helpap, 2009, Histology and histopathology.

The significance of modified Gleason grading of prostatic carcinoma in biopsy and radical prostatectomy specimens

L. Egevad, B. Helpap, 2006, Virchows Archiv.