The inflammation of the lining of the stomach

Reflux (GORD)


Gastric acid leaks up into the oesophagus

Hiatus Hernia


Stomach slip through the diaphragm into the chest



A serious complication of gastroesophageal reflux disease



Solid particles that form from bile cholesterol and bilirubin in the gallbladder

Ulcerative Colitis

Ulcerative colitis

Inflammation of the inner lining of the colon causing blood and mucous diarrhoea

Crohn's disease

Crohn's disease

Inflammatory bowel disease that cause ulcers, fistulae, strictures & perforations



Condition of having multiple pouches (diverticula) in the colon

News and Updates

Workshop on GIA Staplers at PGH Badulla

GIA staplers are commonly used in many surgical specialities. The technology has come a long way hence changing the commonly held practices. Therefore it was time for an update on re-familiarisation and correct use of GIA staplers and energy devices in surgery. Gastroenterological surgical unit of PGH Badulla with the guidance of Dr Mohan Samarasinghe (MBBS MD MRCS) conducted a short workshop on this topic aiming operating doctors and theatre nursing staff on 19th Feb 2019 morning from 9.00am to 12pm.

Frontiers in Intestinal & Colorectal Disease - St Mark's

Frontiers in Intestinal and Colorectal Disease -14th Annual International Congress 22nd–25th November 2016 at St Mark’s Hospital, Harrow UK is St Mark's flagship four day annual international conference, with symposia covering many of the most important topics in intestinal and colorectal disease. Dr Mohan attended the frontiers conference.

Annual Conference of the MGB-OAGB Club 2016

The Annual Consensus Conference of the MGB-OAGB International Club was held at at Gatwick - London in 2016. During this meeting, Dr Mohan Samarasinghe was acquainted with the founder of Mini gastric bypass (MGB) and One anastomosis gastric bypass (OAGB) DR Robert Rutledge. Dr Mohan has contributed to the sharing knowledge on the operation by the means of providing medical illustrations of the various steps of the procedure.

Dr Mohan at The Grand Rounds of St Marks

The grand rounds of St Marks' Academic institute and St Marks' hospital is the weekly academic update forum where a distinguished speaker will talk on an important topic followed by discussion in view of updating knowledge in the field of colorectal surgery and medicine. Dr Mohan Samarasinghe spoke at the grand rounds of St Marks Academic institute and St Marks hospital on Evolution and new trends of restoration following proctocolectomy.

First class surgical care in gastroenterology

I am a Consultant Surgeon in Gastroenterology which means, I manage all the diseases and conditions occur in the gastro-intestinal tract. Namely oesophagus, stomach, duodenum, panceas, liver, gallebladder, billiary system, small bowel, large bowel / colon, rectum and anal canal.

GI Diseases

I manage both cancers and non-cancer conditions. I use laparoscopic (keyhole) surgical techniques and enhanced recovery protocols to help ensure the best possible outcomes for my patients.

I obtained my MBBS from Faculty of Medicine - University of Colombo and completed my Local Surgical Training (MD, MRCS) at the National Hospital of Sri Lanka.

My specialised surgical training in gastroenterology (MD GI Surgery) was undertaken at National Hospital of Sri Lanka, Colombo North Teaching Hospital, IFSO Bariatric training Vienna - Austria, St Marks Hospital and St Marks Academic Institute - London,UK.

I have published a number of peer reviewed papers, book chapters and reports as well as presented at numerous national and international meetings.

I'm registered in Sri Lanka Medical Council (SLMC) and General Medical Council (GMC) UK.

All these culminate in providing you with the best, up-to-date, state-of-the-art surgical care for gastroenterological problems.

Latest Videos

Lap Chole with Livac - Novel Liver Retractor

For the first time in the south asia, we are testing a novel non traumatising liver retractor - LiVac. Here I perform a laparoscopic cholecystectomy in a patient who ...

Mini Gastric Bypass by Dr Mohan Samarasinghe

Mini Gastric Bypass for morbid obesity (Slightly modified Rutledge technique). The patient is of having BMI of 44.9. Biggest challenge in this particular patient is ...

Laparoscopic cholecystectomy after gallstone pancreatitis

This is a patient who underwent laparoscopic cholecystectomy after a bout of gallstone pancreatitis. Stigmata of inflammation and a widened cystic duct which ...