Assoc. Prof. Metehan Gümüş, M.D, General Surgery - Istanbul, Turkey

About Assoc. Prof. Metehan Gümüş, M.D

Assoc. Prof. Dr. Metehan Gümüş, M.D., is a highly distinguished and board-certified General Surgeon currently practicing at the prestigious Private Pendik Bolge Hospital in Istanbul, Turkey. With a comprehensive medical career spanning over two decades, Dr. Gümüş has established himself as an elite healthcare professional and academician. His extensive medical journey began at Cukurova University Faculty of Medicine, where he laid the foundational groundwork for what would become a highly prolific career in advanced surgical interventions.

Dr. Gümüş is internationally recognized for his exceptional clinical skills and his profound academic contributions to the field of general surgery. Having published over 50 peer-reviewed articles in highly respected international and national medical journals, his clinical practice is deeply rooted in evidence-based medicine. He has completed specialized medical training both in Turkey and the United Kingdom, specifically focusing on advanced surgical techniques. Patients seeking world-class medical care in Istanbul choose Dr. Gümüş for his precise surgical skills, his commitment to patient safety, and his comprehensive approach to complex surgical challenges, ranging from obesity and metabolic interventions to intricate cancer treatments.

Medical Expertise & Specializations

Assoc. Prof. Dr. Metehan Gümüş brings a unique and highly sought-after blend of clinical mastery and academic rigor to the operating room. His surgical repertoire is incredibly diverse, focusing heavily on modern, minimally invasive techniques that promote faster recovery times, reduce postoperative pain, and minimize complication rates. His primary clinical focus encompasses bariatric and metabolic surgery, breast oncology, and advanced laparoscopic procedures.

In the realm of weight loss, Dr. Gümüş is a leading authority in Obesity and Metabolic Surgery. He understands that severe obesity is a complex, chronic disease that requires a multifaceted approach. By utilizing advanced laparoscopic methods, he helps patients achieve sustainable weight loss while simultaneously addressing severe metabolic conditions such as Type 2 diabetes, hypertension, and sleep apnea. Furthermore, Dr. Gümüş is highly skilled in Revision Obesity Surgery, providing corrective solutions for patients who have experienced weight regain or complications from prior bariatric procedures.

Beyond bariatrics, Dr. Gümüş has a profound sub-specialization in Breast Surgery and Cancer Surgery. He has spent considerable time researching and practicing breast oncology, including an international tenure at the Peggy Wood Breast Centre in Maidstone, Kent, England. His peer-reviewed research extensively covers sentinel lymph node biopsies, granulomatous mastitis, breast microcalcifications, and factors affecting the prognosis of breast cancer. His dedication to oncological surgery ensures that patients facing cancer diagnoses receive the most advanced, surgically sound, and compassionate care available.

Conditions Treated

• Severe Obesity: Comprehensive surgical management for patients struggling with high Body Mass Index (BMI) who have not found success with traditional diet and exercise.
• Metabolic Syndrome & Type 2 Diabetes: Treating systemic metabolic disorders through gastrointestinal surgical modifications that alter the body's hormonal response to food.
• Failed Previous Bariatric Surgeries: Treating patients who suffer from severe acid reflux, anatomical complications, or inadequate weight loss following an initial weight loss procedure.
• Breast Cancer: Surgical management of malignant breast tumors, including invasive ductal carcinoma, invasive lobular carcinoma, and early-stage in-situ carcinomas.
• Benign Breast Diseases: Diagnosis and treatment of non-cancerous breast conditions, such as idiopathic granulomatous mastitis, fibroadenomas, and breast cysts.
• Gastrointestinal Cancers: Surgical oncology treatments for malignancies within the stomach, colon, and other areas of the digestive tract.
• Gallbladder Diseases: Minimally invasive treatment for gallstones, gallbladder inflammation (cholecystitis), and biliary tract obstructions.
• Hernias: Surgical repair of inguinal, umbilical, and incisional hernias, as well as complex abdominal wall reconstructions.

Procedures Performed

• Advanced Laparoscopic Surgery: A modern surgical technique using small incisions, specialized cameras, and precise instruments to perform complex abdominal procedures with minimal trauma to the patient.
• Obesity Surgery (Bariatric Surgery): Including Laparoscopic Sleeve Gastrectomy (removing a large portion of the stomach to restrict food intake) and Gastric Bypass procedures.
• Metabolic Surgery: Specific gastrointestinal bypass techniques tailored to induce remission in Type 2 diabetes and normalize lipid profiles.
• Revision Obesity Surgery: Complex secondary operations designed to convert or repair a previous bariatric surgery, ensuring the patient's long-term health and weight goals are met securely.
• Breast Conserving Surgery (Lumpectomy): Removing the cancerous breast tissue while preserving the cosmetic appearance of the breast, often combined with oncoplastic techniques.
• Mastectomy & Sentinel Lymph Node Biopsy: Complete removal of breast tissue for extensive cancers, accompanied by targeted lymph node removal to accurately stage the cancer without causing unnecessary lymphedema (a topic heavily researched and published by Dr. Gümüş).
• Laparoscopic Cholecystectomy: The gold-standard minimally invasive procedure for the safe removal of a diseased gallbladder.
• Cancer Surgery (Surgical Oncology): Extensive resections of solid tumors within the abdominal cavity, adhering to strict international oncological guidelines to ensure clear margins and optimal patient survival rates.

Education and Training

Assoc. Prof. Dr. Metehan Gümüş has a remarkably extensive academic and professional background. He has continually advanced his medical knowledge by serving in top-tier medical universities, military hospitals, and specialized breast centers. His progression from a Research Assistant to an Associate Professor highlights his dedication to both the practical and academic pillars of medicine.

• 1990 - 1997: Medical Doctor Degree (M.D.), Faculty of Medicine, Cukurova University, Turkey.
• 1997 - 2002: General Surgery Residency and Research Assistantship, Faculty of Medicine, Ataturk University, Erzurum.
• 2003 - 2004: General Surgeon (Op. Dr.), Ministry of Health Adıyaman State Hospital.
• 2004 - 2005: Medical Second Lieutenant (General Surgeon), Ardahan Military Hospital.
• 2005 - 2008: General Surgeon (Op. Dr.), Elazig Çağrı Medical Center.
• 2009 - 2012: Associate Professor of General Surgery, Faculty of Medicine, Dicle University.
• 2010: Associate Professor, Breast Clinic, Istanbul University Cerrahpasa Medical Faculty.
• 2011: Specialist Training, Peggy Wood Breast Centre, Maidstone, Kent, England.
• 2012 - 2016: Associate Professor of General Surgery, Faculty of Medicine, Dicle University.
• 2017 - 2018: Associate Professor, Batman Zilan Hospital.
• 2018 - 2019: Associate Professor, Malatya Sevgi Hospital.
• 2019 - 2021: Associate Professor, VM Medicalpark Kocaeli Hospital.
• 2021 - 2023: General Surgeon, REYAP Istanbul Hospital.
• 2023 - 2024: General Surgeon, Rami Hospital.
• 2024 - Present: Associate Professor of General Surgery, Private Pendik Bolge Hospital (PENDIK BOLGE HASTANESI), Istanbul, Turkey.

Professional Memberships:

• Turkish Surgical Association
• Turkish Breast Diseases Federation
• Turkish Medical Association

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