Dr. Demis Vasiliadis / General Surgeon

Areas of Expertise

Surgical Techniques

  • Minimally invasive (laparoscopic) surgery
  • Open surgery (laparotomy)

Surgical Specialties

Gastrointestinal Surgery

Treatment of oncological and non-oncological conditions involving:

  • Esophagus
  • Stomach
  • Small intestine
  • Large intestine
  • Rectum
  • Proctology
  • Liver
  • Gallbladder
  • Pancreas

Retroperitoneal Oncology

  • Surgical treatment of retroperitoneal tumors (excluding the urinary system – kidneys and ureters)

Bariatric Surgery

  • Gastric bypass
  • Sleeve gastrectomy

Abdominal Wall Surgery

  • Hernias
  • Abdominal wall tumors

Pelvic Floor Surgery

  • Rectal prolapse
  • Uterine prolapse

Endocrine Surgery

  • Thyroid gland
  • Parathyroid glands
  • Adrenal glands

Breast Surgery

Thoracic Surgery


Education & Professional Development

1994

High School Diploma
3rd Lyceum, Thessaloniki, Greece

1994–2000

Medical Degree (General Medicine)
Kuban State Medical Academy, Russia

January 2006

Recognition of Medical Degree
DIKATSA, Greece

October 2013

Specialist Degree in General Surgery
Catholic University of Leuven, Belgium

October–December 2015

Oncology Retraining & Specialty Certification
N.N. Petrov Research Institute of Oncology
Saint Petersburg, Russia

September–November 2017

Advanced Liver Surgery Training
Hepato-Biliary Surgery Center
Prof. René Adam
Paul-Brousse Hospital, Kremlin-Bicêtre, Paris, France


Surgical Residency & Specialization

University Hospital, Tours, France

April 2003 – April 2004

  • Intern, then Resident
  • Department of General Surgery
  • Prof. Noël Huten

University Hospital, Brest, France

May 2004 – October 2004

  • Resident
  • Department of General Surgery
  • Prof. Patrick Lozac’h

Hôtel-Dieu Hospital, Paris, France

November 2004 – April 2005

  • Resident
  • Department of General Surgery
  • Prof. Jean-Pierre Bethoux

Riaz Hospital, Switzerland

April 2006 – March 2007

  • Resident
  • Department of Orthopedic Surgery & Traumatology
  • Dr. Francis Sonney

Saint-Luc Clinic, Catholic University of Louvain, Brussels, Belgium

March 2007 – April 2007

  • Intern
  • Department of Cardiovascular & Thoracic Surgery
  • Prof. Gebrine El Khoury

Notre-Dame Hospital, Charleroi, Belgium

May 2007 – September 2007

  • Resident
  • Department of General Surgery
  • Dr. Fabrice Corbisier

Hornu Hospital, Belgium

October 2007 – September 2009

  • Resident
  • Department of General Surgery
  • Dr. Jacques Baillieux

Saint Joseph Clinic, Ghilly, Belgium

October 2011 – September 2013

  • Resident
  • Department of General Surgery
  • Dr. Nicolas Tinton

Professional Experience

Saint-Jean Clinic, Brussels, Belgium

April 2016 – September 2016

  • General Surgeon

Saint-Pierre University Hospital, Brussels, Belgium

February 2017 – August 2017

  • General Surgeon
  • Department of General Surgery
  • Prof. Guy-Bernard Cadière

Ardennes Hospital, Libramont, Belgium

December 2017 – December 2025

  • General Surgeon

Scientific Work

International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO)

2013 • Istanbul, Turkey

Poster Presentation

“Laparoscopic Sleeve Gastrectomy: Outcomes in 144 Patients After 1–4 Years of Follow-up”


Additional Degrees & Advanced Training

2004

  • Diploma in Experimental Microsurgery and Surgical Anatomy
    Tours, France
  • Interuniversity Diploma in Laparoscopic Surgery
    Tours, France

2008–2009

  • Interuniversity Program in Liver Surgery and Portal Hypertension
    Hepato-Biliary Surgery Center, Paul-Brousse Hospital, Paris, France

2009

  • Interuniversity Diploma in Visceral Traumatology
    Montpellier, France

2010–2012

  • Interuniversity Course in Oncologic Surgery
    Rouen & Montpellier, France

2019

  • Masterclass in Laparoscopic Liver Surgery
    Johnson & Johnson Institute, Hamburg, Germany

2020

  • University Certificate in Diagnostic Radiology
    Liège, Belgium

2021

  • European Interuniversity Diploma in Surgical Practice in Oncology
    Lyon, France

2023

  • University Diploma in Surgical and Interventional Endoscopy
    IRCAD, Strasbourg, France