Sioulas Athanasios

Sioulas Athanasios Gastroenterologist

3rd Gastroenterology Department, HYGEIA

Education & Academic Qualifications

  • 2015-2016: Fellowship in Interventional Endoscopy, Department of Interdisciplinary Endoscopy, University Medical Center Hamburg-Eppendorf  (Hamburg, Germany)
  • 2015: Diploma of the European Board of Gastroenterology and Hepatology (EBGH)
  • 2015: Facharzt für Innere Medizin und Gastroenterologie (Hamburg, Germany)
  • 2015: Specialty in Gastroenterology, Athens, Greece
  • 2010-2014: Fellowship in Gastroenterology, Hepatogastroenterology Unit, Attikon University Hospital
  • 2010: PhD, Medical School, National and Kapodistrian University of Athens
  • 2006-2009: Resident in Internal Medicine, 3rd Department of Internal Medicine, 417 NIMTS
  • 2002: MD, Medical School, National and Kapodistrian University of Athens

Doctoral thesis

  • 2010: Laboratories of Histology-Embryology and Diagnostic Cytology, Medical School, National and Kapodistrian University of Athens, “Artificial intelligence in the diagnosis of gastric lesions”.

Fellowship in Societies, Membership in Journal Editorial Committees

  • Hellenic Society of Gastroenterology

  • European Board of Gastroenterology and Hepatology

  • European Society of Gastrointestinal Endoscopy

Editorial Boards

  • Editorial board member, Journal “Endoskopiseis”

  • Reviewer for peer-reviewed international journals


Work Experience

  • 2016-today: Gastroenterologist, 3rd Gastroenterology Department, Hygeia Hospital

  • 2015-2016: Post-graduate Clinical/Research Fellow, Department of Interdisciplinary Endoscopy, University Medical Center Hamburg-Eppendorf  (Hamburg, Germany)

Clinical & Research Interest

Clinical Interest:

  • Therapeutic Endoscopy

  • Inflammatory Bowel Diseases (Crohn’s disease, ulcerative colitis)

Research Interest: 

  • Quality indicators in colonoscopy

  • Gut microbiota and gastrointestinal diseases

Honors & Awards

  • 2015: Scholarship for post-graduate training , Hellenic Society of Gastroenterology

  • 2014: Best oral presentation award , 34th Panhellenic Gastroenterology Congress

  • 1998: Excellence Diploma, Laboratory of Anatomy,  National and Kapodistrian University of Athens

  • 1996-2002: Ant. Papadakis endowment, National and Kapodistrian University of Athens

Recent Publications

  • Leventogiannis K, Gkolfakis P, Spithakis G, Tsatali A, Pistiki A, Sioulas AD, Giamarellos-Bourboulis EJ, Triantafyllou K. Effect of a Preparation of Four Probiotics on Symptoms of Patients with Irritable Bowel Syndrome: Association with Intestinal Bacterial Overgrowth. Probiotics Antimicrob Proteins. 2019;11:635-37

  • Sioulas AD, Papadaki K, Schizas D, Scotiniotis I. Challenging Lumen-Apposing Metal Stent Removal after Successful Drainage of a Pancreatic Pseudocyst. GE Port J Gastroenterol. 2018;25:333-334

  • Schizas D, Ntanasis-Stathopoulos I, Tsilimigras DI, Sioulas AD, Moris D, Spartalis E, Scotiniotis I, Papanikolaou IS. The Role of Endoscopic Ultrasound in the Diagnosis and Management of Primary Gastric Lymphoma. Gastroenterol Res Pract. 2017;2017:2397430

  • Sioulas AD, El-Masry MA, Groth S, Schachschal G, Anders M, Rosch T, Denzer U. Prospective evaluation of the short access cholangioscopy for stone clearance and evaluation of indeterminate strictures. Hepatobiliary Pancreat Dis Int. 2017;16:96-103

  • Papanikolaou IS, Apostolopoulos P, Tziatzios G, Vlachou E, Sioulas AD, Polymeros D, Karameris A, Panayiotides I, Alexandrakis G, Dimitriadis GD, Triantafyllou K. Lower adenoma miss rate with FUSE vs. conventional colonoscopy with proximal retroflexion: a randomized back-to-back trial. Endoscopy. 2017;49:468-475

  • Sterlacci WSioulas AD, Veits L, Gönüllü P, Schachschal G, Groth S, Anders M,  Kontos CK, Topalidis T, Hinsch A, Vieth M, Rösch T, Denzer UW. 22 gauge core vs 22 gauge aspiration needle for endoscopic ultrasound-guided sampling of abdominal masses. World J Gastroenterol 2016;22:8820-8830

  • Denzer UWSioulas AD, Abdulkarim M, Groth S, Rösch T, Busch P, Izbicki J, Ittrich H, Adam G, Schachschal G. Endoscopic ultrasound-guided drainage of abdominal fluid collections after pancreatic surgery: Efficacy and long-term follow-up. Z Gastroenterol. 2016;54:1047-1053

  • Sioulas AD, Papanikolaou IS. Is optical diagnosis sufficiently established to safely discard diminutive polyps? Endoscopy 2016; 48: 792-793

  • Triantafyllou K, Tziatzios G, Sioulas AD, Beintaris I, Gouloumi AR, Panayiotides IG, Dimitriadis GD. Diagnostic yield of scope retroflexion in the right colon: A prospective cohort study. Dig Liver Dis 2015; pii: S1590-8658(15)30174-2

  • Sioulas AD, Vasilatou D, Pappa V, Dimitriadis G, Triantafyllou K. Epigenetics in Gastrointestinal Stromal Tumors: Clinical Implications and Potential Therapeutic Perspectives. Dig Dis Sci 2013; 58(11): 3094-3102