P. Apostolopoulos

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Endoscopic submucosal dissection for the diagnosis and treatment of a gastric submucosal tumor: initial experience in Greece

P. Apostolopoulos, Antonios Zalonis, Athanasios Karamoutzos, 2012, Annals of gastroenterology.

Capsule endoscopy; the cumulative experience from its use in 193 patients with suspected small bowel disease.

N. Kalantzis, P. Apostolopoulos, G. Alexandrakis, 2005, Hepato-gastroenterology.

Small bowel ulcerative lesions are common in elderly NSAIDs users with peptic ulcer bleeding.

P. Apostolopoulos, Antonios Zalonis, P. Tsibouris, 2014, World journal of gastrointestinal endoscopy.

Environmental Factors in IBD

P. Apostolopoulos, 2006 .

Gastrointestinal involvement in COVID-19 patients: a retrospective study from a Greek COVID-19 referral hospital

P. Apostolopoulos, E. Vlachou, P. Tsibouris, 2020, Annals of gastroenterology.

The Role of Cytology and HPV Typing as a Screening Tool in Patients With Intraanal Warts

N. Kalantzis, G. Alexandrakis, A. Karameris, 2011, Journal of clinical gastroenterology.

Rapid urease test is less sensitive than histology in diagnosing Helicobacter pylori infection in patients with non‐variceal upper gastrointestinal bleeding

P. Davaris, P. Apostolopoulos, M. Tzivras, 2000, Journal of gastroenterology and hepatology.

Serum c-kit Protein Detection as a Reliable Biomarker for the Diagnosis of Gastrointestinal Stromal Tumors: A Case-Control Study

Alex, A. Zalonis, A. Karameris, 2014 .

Clinical trial: effectiveness of chewing‐gum in accelerating capsule endoscopy transit time – a prospective randomized, controlled pilot study

N. Kalantzis, C. Liatsos, P. Apostolopoulos, 2008, Alimentary pharmacology & therapeutics.

Evaluation of capsule endoscopy in active, mild-to-moderate, overt, obscure GI bleeding.

Nikolaos Kalantzis, Christos Liatsos, N. Kalantzis, 2007, Gastrointestinal endoscopy.

Therapeutic combination of radiofrequency surgical dissection and oral acitretin in the management of perianal Buschke–Löwenstein tumour: a case report

P. Apostolopoulos, P. Tsibouris, G. Alexandrakis, 2012, International journal of STD & AIDS.

CAPSULE ENDOSCOPY FINDINGS IN PATIENTS WITH OCCULT OR OVERT BLEEDING OLDER THAN 80 YEARS

Nikolaos Kalantzis, N. Kalantzis, P. Apostolopoulos, 2012, Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society.

The role of small-bowel endoscopy in inflammatory bowel disease: an updated review on the state-of-the-art in 2021

P. Apostolopoulos, E. Vlachou, D. Christodoulou, 2021, Annals of gastroenterology.

Helicobacter pylori (H pylori) infection in Greece: the changing prevalence during a ten-year period and its antigenic profile

P. Apostolopoulos, M. Tzivras, A. Archimandritis, 2002, BMC gastroenterology.

Validation of the Capsule Endoscopy Crohn’s Disease Activity Index (CECDAI or Niv score): a multicenter prospective study

C. O'Morain, Z. Fireman, E. Scapa, 2011, Endoscopy.

Intraductal papillary neoplasm of the bile duct : case report and review of the literature.

K. Dimopoulos, P. Apostolopoulos, G. Alexandrakis, 2018, Acta gastro-enterologica Belgica.

Concomitant versus sequential therapy for the treatment of Helicobacter pylori infection: a Greek randomized prospective study

P. Apostolopoulos, E. Vlachou, P. Tsibouris, 2016, Scandinavian journal of gastroenterology.

Capsule endoscopy retention as a helpful tool in the management of a young patient with suspected small-bowel disease.

N. Kalantzis, D. Theodorou, P. Apostolopoulos, 2007, World journal of gastroenterology.

When in Trouble Think of the Bubble: Paradoxical Cerebral Arterial Gas Embolism after Endoscopic Retrograde Cholangiopancreatography

K. Dimopoulos, P. Apostolopoulos, E. Vlachou, 2021, Case Reports in Gastroenterology.

Henoch-Schönlein purpura associated with Campylobacter enterocolitis.

I. Delladetsima, P. Apostolopoulos, A. Archimandritis, 1999, Journal of clinical gastroenterology.

A Four-Probiotics Regimen Combined with A Standard Helicobacter pylori-Eradication Treatment Reduces Side Effects and Increases Eradication Rates

C. Liatsos, P. Apostolopoulos, D. Christodoulou, 2022, Nutrients.

Bulevirtide plus Tenofovir Disoproxil Fumarate Improves Liver Function in HDV/HBV Related Cirrhosis after Virological Response: A Case Report

P. Apostolopoulos, P. Tsibouris, N. Papadopoulos, 2022, Gastrointestinal Disorders.

Endocuff-assisted colonoscopy is associated with a lower adenoma miss rate: a multicenter randomized tandem study

C. Hassan, G. Alexandrakis, A. Repici, 2017, Endoscopy.

Basket versus balloon extraction for choledocholithiasis: a single center prospective single-blind randomized study.

K. Dimopoulos, P. Apostolopoulos, E. Vlachou, 2020, Acta gastro-enterologica Belgica.

10-Day Versus 14-Day Quadruple Concomitant Nonbismuth Therapy for the Treatment of Helicobacter pylori Infection

P. Apostolopoulos, E. Vlachou, P. Tsibouris, 2020, Journal of clinical gastroenterology.

Evaluation of the Direct Economic Cost per Eradication Treatment Regimen against Helicobacter pylori Infection in Greece: Do National Health Policy-Makers Need to Care?

A. Exadaktylos, A. Papaefthymiou, M. Doulberis, 2020, Medicina.

Video-capsule endoscopy gastric and small bowel transit time and completeness of the examination in patients with diabetes mellitus.

N. Kalantzis, P. Apostolopoulos, S. Ladas, 2007, Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver.

Lower adenoma miss rate with FUSE vs. conventional colonoscopy with proximal retroflexion: a randomized back-to-back trial

A. Karameris, P. Apostolopoulos, E. Vlachou, 2017, Endoscopy.

A 13-year time trend analysis of 3724 small bowel video capsule endoscopies and a forecast model during the financial crisis in Greece

Konstantinos Triantafyllou, George Alexandrakis, G. Alexandrakis, 2017, European journal of gastroenterology & hepatology.

The role of wireless capsule endoscopy in investigating unexplained iron deficiency anemia after negative endoscopic evaluation of the upper and lower gastrointestinal tract.

N. Kalantzis, C. Liatsos, P. Apostolopoulos, 2006, Endoscopy.

Endoscopic Esophagitis is More Severe in Gastroesophageal Reflux Patients With a Positive Family History

N. Kalantzis, P. Apostolopoulos, P. Tsibouris, 2012, Journal of clinical gastroenterology.

M2A Wireless Capsule Endoscopy Versus Enteroclysis; A Prospective Study in 68 Patients with Suspected Small Bowel Disease

N. Kalantzis, P. Apostolopoulos, G. Alexandrakis, 2004 .

Sedation during endoscopic procedures: a Hellenic Society of Gastroenterology Position Statement

T. Rokkas, C. Liatsos, K. Mimidis, 2023, Annals of gastroenterology.

M2A Wireless Capsule Endoscopy for Diagnosing Ulcerative Jejunoileitis Complicating Celiac Disease

N. Kalantzis, P. Apostolopoulos, G. Alexandrakis, 2004, Endoscopy.

Capsule endoscopy in obscure occult vs. obscure overt GI bleeding.

P. Apostolopoulos, I. Papanikolaou, N. Kalantzis, 2005, Gastrointestinal endoscopy.