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Prof. Dr. Birol Baysal image

Department of gastroenterology, hepatology with liver transplantation centre

Prof. Dr. Birol Baysal

About the department

The department of gastroenterology, hepatology with liver transplantation centre at Memorial Sisli Hospital Istanbul offers a full range of high-precision diagnostics and effective treatment of gastrointestinal tract diseases, including liver, gallbladder and biliary tract. In clinical practice, the doctor uses modern endoscopic equipment for colonoscopy, gastroscopy, endoscopic retrograde cholangiopancreatography and other diagnostic studies. The exceptional professionalism of the department's doctors allows them to successfully deal with both simple diseases of the digestive system and incredibly complex gastroenterological pathologies, including cancer. Each patient is provided with an individual approach and an optimal treatment regimen, considering individual needs and wishes. The department ranks among the top medical institutions worldwide for liver transplants. Every year, surgeons perform more than 260 operations. The department's medical team is distinguished by exceptional professionalism and vast experience in liver transplantation, which allows for surgical treatment with minimal complications and rejection of the transplanted organ.

Doctors limit themselves to drug therapy using modern, highly effective drugs in diseases such as stomach ulcers, gastritis, gastroesophageal reflux disease, pancreatitis and hepatitis. However, patients with intestinal polyps, gastrointestinal bleeding, oesophagal strictures, and oesophagal varices require interventional endoscopic treatment. If surgical intervention is necessary, doctors from the general surgery department will be involved in the treatment process.

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Treatment and diagnostic focus of the department


  • Acute pancreatitis
  • Crohn's disease
  • Gastrointestinal bleeding
  • Varicose veins of the oesophagus
  • Celiac disease
  • Diverticulitis
  • Gastritis
  • Hepatitis A, B, C
  • Liver cancer
  • Cirrhosis of the liver
  • Liver failure
  • Colitis
  • Obesity
  • Reflux
  • Rectal cancer
  • Ulcerative colitis
  • Diverticulum Zenker


  • Anamnesis 
  • Physical examination (palpation) 
  • Laboratory and biochemical tests 
  • Esophagogastroduodenoscopy
  • Endoscopic retrograde cholangiopancreatography
  • Colonoscopy
  • Rectosigmoidoscopy
  • Ultrasound examination 
  • Computed tomography 
  • Magnetic resonance imaging 
  • Oesophageal and gastric manometry 
  • Oesophageal pH monitoring (physiologic measurement of acid in the oesophagus)
  • Flexible sigmoidoscopy 
  • Liver biopsy (procedure to remove a small piece of liver tissue)
  • FibroScan (specialized ultrasound machine for the liver)
  • H.pylory breath test 


  • Drug therapy
  • Proton pump inhibitors therapy 
  • Endoscopic interventions
  • Fundoplication
  • Treatment with bougie and balloon
  • Bandage ligation
  • Polypectomy
  • Endoscopic sleeve gastroplasty
  • Split liver transplant
  • Transplantation of a part of the liver from a living related donor
  • Orthotopic liver transplant
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Doctor profile


  • 2006 - 2009 Training in Gastroenterology, Faculty of Medicine, Istanbul Cherrahpasa University, Istanbul, Turkey
  • 1992 - 1996 Training in Internal Medicine Specialization, Haseki Educational and Research Hospital, Istanbul, Turkey
  • 1985 - 1991 Medical degree, Istanbul Cherrahpasa University Faculty of Medicine, Istanbul, Turkey


  • 2016 Gastroenterology Specialist, Şisli Memorial Hospital, Istanbul, Turkey
  • 2012 - 2016 Gastroenterology Specialist, Lecturer, Font Bezmialem University, Istanbul, Turkey
  • 2010 - 2012 Specialist in Gastroenterology, Dyarbakir Teaching and Research Hospital, Diyarbakir, Turkey
  • 2009 - 2010 Gastroenterology Specialist, Haseki Educational Research Hospital, Istanbul, Turkey
  • 1996 - 2006 Specialist in Internal Medicine, Haseki Educational Research Hospital, Istanbul, Turkey

Awards, memberships, publications

  • Turkish Gastroenterological Association
  • Association of Gastrointestinal Endoscopy
  • Turkish Association for Liver Research
  • Viral Hepatitis Association
  • American Association for the Study of Liver Diseases
  • European Organization for Crohn's Disease and Colitis
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