Doctor Giorgos Karagiannis is a general surgeon with a special interest in minimally invasive surgery Types of surgery the doctor performs: laparoscopic sleeve gastrectomy laparoscopic hernia repair laparoscopic cholecystectomy (removal of gallbladder) laparoscopic colectomy laparoscopic appendicectomy thyroidectomy (removal of thyroid gland) breast surgery laser hemorroid surgery perianal fistula treatment with laser pilonĪ¹dal cyst treatment