Assoc. Prof. Hayrettin Dizen, MD

Assoc. Prof. Hayrettin Dizen, MD is a General Surgery specialist at Acibadem Eskisehir Hospital in Eskişehir, Turkey. His clinical work covers endocrine surgery, thyroid diseases and their treatment, obesity surgery, pancreatic, liver and biliary tract diseases, digestive system diseases and surgery, and the treatment of hemorrhoids and anorectal diseases. He has more than 24 years in medicine and speaks Turkish and English.

Dr. Dizen graduated from Uludağ University Faculty of Medicine in 2002 and completed his General Surgery training at Ankara Numune Training and Research Hospital in 2007, where he trained as an assistant in the 5th General Surgery Clinic and then worked as a specialist physician in the 5th and 7th General Surgery Clinics until 2010. From 2010 he worked at Eskişehir Yunus Emre State Hospital, as a specialist physician in the General Surgery Clinic and, between 2013 and 2015, as chief physician. Between 2019 and 2021 he worked in the Division of Surgical Oncology of the Department of General Surgery at Eskişehir Osmangazi University. He has been part of Acıbadem Healthcare Services since 2021. He is a member of the Bariatric and Metabolic Surgery Association, the Endoscopic and Laparoscopic Surgery Association, and the Turkish Surgical Association. His published work includes studies on parathyroid hormone measurement in washout fluid for localizing lesions in primary hyperparathyroidism, ultrasound-guided fine needle aspiration cytology of thyroid nodules, the neutrophil-to-lymphocyte ratio in suspected appendicitis, and the number of trocars in laparoscopic cholecystectomy.

Clinical focus

A central part of Dr. Dizen’s practice is endocrine surgery, including the assessment and treatment of thyroid diseases. He also performs obesity surgery and evaluates patients living with obesity who are considering a surgical option; further general information is available on the obesity treatment page. Whether surgery is appropriate depends on each patient’s history, examination findings and test results, and is decided together with the patient after these have been reviewed.

Dr. Dizen additionally treats pancreatic, liver and biliary tract diseases, with clinical interest in conditions such as fatty liver disease and liver failure; see the liver disease treatment page for background. His work in digestive system diseases and surgery extends to the treatment of hemorrhoids and anorectal diseases, as well as the treatment of pelvic pain and functional disorders. In each of these areas, the choice between conservative management and a surgical procedure is made on an individual basis.

How Dr. Dizen works with international patients

Dr. Dizen consults in Turkish and English, and interpreters can be arranged for patients who speak other languages. The Acibadem international patient team coordinates the collection of prior reports and imaging, arranges appointments and organizes the hospital visit. A first consultation typically covers the patient’s history and symptoms, a review of existing imaging and previous treatments, a clinical examination and a discussion of the options. Video consultation is available for international patients who wish to discuss their situation with Dr. Dizen before deciding whether to travel.