Academic Qualifications

• MBBS / 1998 / University of Sri Jayewardenepura / Sri Lanka
• MS (Surgery) / 2007 / Postgraduate Institute of Medicine University of Colombo / Sri Lanka

Professional Qualifications

• Fellow of the Royal College of Surgeons of England ( F R C S )
• Fellow of Association of Minimal Access Surgeons of India
• Diploma in Laparoscopic Surgery, University of Strasbourg, France.

Memberships in Professional Organizations

• Fellow of Association of Minimal Access Surgeons of India
• Fellow of College of Surgeons of Sri Lanka
• Fellow of the Royal College of Surgeons of England ( F R C S )
• Sri Lanka Medical Council
• Sri Lanka Hepato Pancreato Biliary Association – Founder member
• General Medical Council, UK

• Specialist General Surgeon – Special interest in Laparoscopic Colorectal and Adrenal Surgery
• Parathyroid Surgery
• Special interest in teaching clinical and procedural skills

Google Scholar Link

https://scholar.google.com/citations?user=0GlQClAAAAAJ&hl=en

Publications and Scientific Communications

Publications – Journals

• Trans anal total mesorectal excision (TaTME) of a low rectal cancer using trans anal minimally invasive surgery
  KC Ratnatunga, R Ranatunga, BD Gamage
  Ceylon Medical Journal 62 (4) December 2017
• Incidence and risk factors for Anastomotic failure in 1594 patients treated by trans-anal mesorectal excision
  Penna M, Hompes R, Arnold S, Wynn G, Austin R, Warusavitarne J, Moran B, Hanna G,
  Mortensen N, Tekkis P, international TaTME Registry Collaborative (Gamage BD)
  Annals of Surgery, doi: 10.1097/SLA. 0000000000002653, January 2018
• Extra-ampullary Peutz-Jeghers polyp causing duodenal intussusception leading to biliary obstruction: a case report
  WSL De Silva, AA Pathirana, BD Gamage, DS Manawasighe, B Jayasundara, U Kiriwandeniya
  Journal of medical case reports 10 (1), 196 July 2016
• Inter professional work in operating rooms: a qualitative study from Sri Lanka.
  Espin S. Jayasuriya-Illesinghe V, Guruge S, Gamage B
  BMC surgery 16 (61), 7-9 September 2016
• An unusual cause for shock in dengue fever
  ASD Liyanage, MTGJ Kumara, DK Rupasinghe, S Sutharshan, BD Gamage, A Kulathunga, WMM de Silva
  Ceylon Medical Journal 56 (3) 120-121 November 2011
• Management and outcome of residual bile duct stones following cholecystectomy at a tertiary referral centre in Sri Lanka
  AS Liyanage, BD Gamage, WM de Silva Ceylon Medical J 52 (4), 122-124. December 2007
• Epidemiology and disease characteristics of symptomatic choledocholithiasis in Sri Lanka
  De Silva WAL, Pathirana AA, Wijerathne TK, Gamage BD, Dassanayake BK, De Silva MM
  Annals of Hepato-Biliary-Pancreatic Surgery Vol 23, No 1, February 2019
• Vital step in successful Laparoscopic Adrenalectomy: Identifying the adrenal vein
  HKKT Duminda, Bawantha Gamage, SHR Sanjeewa
  Sri Lanka Journal of Surgery 36 (4): 33-34 December 2018
• Shifting the paradigm of perioperative care in colorectal surgery in a Sri Lankan tertiary care unit
  B Gamage
  Sri Lanka Journal of Surgery 36 (4): 6-10 December 2018
• Tumour budding: an emerging prognostic factor in colorectal carcinoma
  B Seneviratne, B Gamage
  Sri Lanka Journal of Surgery 36 (4): 1-5 December 2018
• Three-dimensional laparoscopy-maiden experience during an adrenalectomy in Sri Lanka
  CN Wijesurendere, H Nagenthiram, BD Gamage
  Sri Lanka Journal of Surgery 35 (2): 22-23 August 2017
• Recurrent Pancreatitis in a Patient with primary hyperparathyroidism (PHPT)
  S Pathmanathan DUS Bulugahapitiya Bawantha Gamage
  Sri Lanka Journal of Diabetes, Endocrinology and Metabolism 3 (1), 35 – 38. February 2013
• Laparoscopic appendectomy in mid trimester
  BD Gamage, V Vidyabhushana, ASD Liyanage, C Fernando
  Sri Lanka Journal of Obstetrics and Gynaecology 32 (3) ISNN 1391-7536: 65-66. September 2010

Presentation – Scientific Meetings

• Recent advances in laparoscopic surgery
  BD Gamage
  The 10^th International Medical Congress, Peradeniya Medical School Alumni Association. October 2010
• Feasibility of practicing Enhanced Recovery after Colorectal Surgery in Sri Lanka
  Dr BD Gamage
  Regional Sessions Jaffna, College of Surgeons of Sri Lanka, March 2018
• Identification of the gut microbiota pattern that associate with diabetes mellitus
  Sahankumari AGP, Gamage BD, Malavige GN
  Ceylon Medical Journal 36 S1, July 2018
• Patterns of bile duct injuries observed during endoscopic retrograde
  Cholangiogram: 13 years of experience in a tertiary care referral centre in South Asia
• C Lakmal, N Chanaka, B Gamage, T Wijerathne, A Pathirana, M De Silva
  Journal of Gastroenterology and Hepatology 33, 117-117 November 2018
• Six years’ experience of enhanced recovery after colorectal surgery (ERAS) protocol in a resource poor setting in South Asia-What have we done to overcome the limitations
  B Gamage, C Lakmal
  Journal of Gastroenterology and Hepatology 33, (4): 40-42 November 2018 (Selected for young investigator award at the Asia Pacific digestive week, Korea)
• Endoscopic retrograde cholangio pancreatography (ERCP)-a novel risk factor for conversion of laparoscopic cholecystectomy
  M Nandasena, C Lakmal, A Pathirana, B Gamage
  HPB 20, S739 September 2018
• A retrospective analysis of a cohort of laparoscopic adrenalectomy patients-a single unit experience
  Gamage BD, Wijegunawardane K, Gunawardena M, Arulprashanth A, Jayawardene MD, Nandasena M, Swarnan A, Wijerathne N
  The Sri Lanka Journal of Surgery 36 (Supplement S1 ISSN 1391-491X), 1(71). August 2018
• A retrospective analysis of a cohort of primary hyperparathyroidism – a single unit experience
  Gamage BD, Jayawardene MD, Wijegunawardena K, Gunawardena M, Arulprashanth A, Nandasena M, Swarnan A, Wijerathne N
  The Sri Lanka Journal of Surgery 36 (Supplement S1 ISSN 1391-491X), 1(69). August 2018
• Determining the gut microbiota patterns associated with early stage and late stage CRC
  Malavige GN Sahankumari AGP, Gamage BD
  The Sri Lanka Journal of Surgery 36 (Supplement S1 ISSN 1391-491X), 1(page 09). August 2018
• Endoscopic retrograde cholangiopancreatography (ERCP)-A novel risk factor for conversion of laparoscopic cholecystectomy
  RGMS Nandasena, MAC Lakmal, AA Pathirana, BD Gamage
  Journal of Gastroenterology and Hepatology 32, 213-2 September 2017
• Patient perception of current methods of obtaining consent for casualty surgical procedures in a single surgical unit of a tertiary care referral centre
  Gamage BD Lakmal MAC, Nandasena RGMS, Epasinghe GP, Pathirana A
  The Sri Lanka Journal of Surgery 35 (Supplement S1 ISSN 1391-491X), 1(40-41). August 2017
• Effectiveness of ultrasonic localization of parathyroid adenoma in minimally invasive Para thyroidectomy-experience from a single surgical unit of a tertiary care centre
  Gamage B Lakmal MAC, Nandasena RGMS
  The Sri Lanka Journal of Surgery 35 (Supplement S1 ISSN 1391-491X), 1(9) August 2017
• Assessment of adequacy of surgical removal of adenoma in minimally invasive Para thyroidectomy (MIP) without intraoperative parathyroid hormone monitoring- experience from a single surgical unit in a tertiary care centre
  Gamage BD Lakmal MAC, Nandasena RGMS
  The Sri Lanka Journal of Surgery 35 (Supplement S1 ISSN 1391-491X), 1(8). August 2017
• Determining the role of the gut microbiome in the aetiology colorectal cancer
  A Gamage, BD Gamage, NG Malavige
  Annual Academic Sessions, Ceylon College of Physicians, September 2017
• Disease characteristics and endoscopic management of choledocholithiasis in Sri Lanka
  De Silva M, Dassanayake BK, Wijerathne TK, Pathirana AA, Gamage BD, David S, Jamaldeen R
  Proceedings of Annual Scientific Sessions 2016, The College of Surgeons of Sri Lanka. August 2016
• Enhanced recovery after colorectal surgery – our experience
  Gamage BD Wirithamulla HK, Niroshana GAL, De Silva TT
  The Sri Lanka Journal of Surgery 31 (Supplement S1 ISSN 1391-491X), 1(45). August 2013
• Determining the specific gut microbiota patterns associated with colorectal cancer
  AGP Sahankumari, BD Gamage, GN Malavige
  Journal of Gastroenterology and Hepatology 33, 500-500. November 2018
• Patterns of bile duct injuries observed during endoscopic retrograde Cholangiogram: 13 years of experience in a tertiary care referral centre in South Asia
  C Lakmal, N Chanaka, B Gamage, T Wijerathne, A Pathirana, M De Silva
  Gastro2016, 32 November 2016
• Enhanced recovery after colorectal surgery (ERAS) protocol in Sri Lanka: An assessment of current practice of colorectal surgery among general surgical units in a developing country in South Asia
  C Lakmal, B Gamage
  Journal of Gastroenterology and Hepatology 33, (4):54-221 November 2018
• How effective is endoscopic stenting in management of post-cholecystectomy bile duct injuries-experience of a tertiary care hepatobiliary centre in a developing country
  C Lakmal, M Nandasena, B Gamage, T Wijerathne, A Pathirana
  HPB 20, S750 September 2018
• Major morphological variants of ampulla of Vater as seen from endoscopy and their prevalence
  Nandasena MS Wickramasekara N, Kumarasinghe KAPR, Pathirana AA, Wijeratne T, Gamage BD
  The Sri Lanka Journal of Surgery 36 (Supplement S1 ISSN 1391-491X), 1(61) August 2018
• Effectiveness of extracorporeal shock wave lithotripsy (ESWL) in treatment of chronic pancreatitis
  Goonesinghe S Gunawardene M, Nandasena RGMS, Pathirana AA, Gamage BD, Wijerathne TK
  The Sri Lanka Journal of Surgery 36 (Supplement S1 ISSN 1391-491X), 1(60) August 2018
• Enhanced Recovery after Colorectal Surgery (ERAS) protocol in Sri Lanka-An assessment of current practice of colorectal surgery among general surgical units
  Gamage BD Lakmal MAC, Chanaka KAN
  The Sri Lanka Journal of Surgery 36(Supplement S1 ISSN 1391-491X), 1(41-42) August 2018
• Chronic pancreatitis – a single unit experience
  Wijerathne TK Gunawardene M, Nandasena RGMS, Pathirana AA, Gamage BD
  The Sri Lanka Journal of Surgery 36 (Supplement S1 ISSN 1391-491X), 1 (27) August 2018
• Is endoscopic retrograde cholangio pancreatography (ERCP) a risk factor for conversion of laparoscopic cholecystectomy? experience of a tertiary care hepatobiliary referral centre
  MAC Lakmal, AA Pathirana, BD Gamage, M Nandasena
  HPB 20, S140 March 2018
• Assessment of medical students’ attitudes towards E-professionalism and usage of Facebook in a developing country in South Asia
  Gamage B Lakmal C, Chanaka N, Ranatunga K
  14^th Asia Pacific Medical Education Conference (APMEC), 1(366) December 2017
• Is there a place for E-Learning in Clinical Skills? an Assessment of the perceived level of computer literacy and the attitudes towards E-Learning in clinical skills among medical students in a developing country in south Asia
  C Lakmal, K Ratnatunga, N Chanaka, B Gamage
  14^th Asia Pacific Medical Education Conference (APMEC), 1(429) December 2017
• Descriptive analysis of laparoscopy converted to open cholecystectomy: experience of a single tertiary care hepato-biliary referral centre
  Gamage BD Nandasena RGMS, Lakmal MAC, Pathirana AA
  Ceylon Medical Journal 62 (Supplement 1), 1(79) July 2017
• Prognostic significance of the circumferential resection margin in rectal carcinoma
  Bawantha Gamage Dr. Thathya de Silva Dr. Bimalka Seneviratne
  Scientific Sessions, faculty of Medical Sciences, University of Sri Jayewardenepura 1(01),40. May 2017
• Pattern of colorectal polyps (CRP) identified during lower gastro intestinal tract endoscopy (LGIE) in a tertiary care surgical centre in Sri Lanka
  Gamage B Chanaka KAN, Lakmal MAC, Nandasena MS
  The College of Surgeons of Sri Lanka 35(Supplement S1 ISSN 1391-491X),1(7) August 2017
• Iatrogenic Bile Duct Injuries Observed during Endoscopic Retrograde Cholangiogram; Is There a Change with More Formal Training in Laparoscopic Surgery
  MAC Lakmal, KAN Chanaka, A Pathirana, B Gamage, T Wijerathne, IWMP Wanigasooriya, M De Silva
  Proceedings of Annual Academic Sessions 2016, The College of surgeons of Sri Lanka. August 2016
• A new paradigm for ultrasonography as an outcome predicting tool in choledocholithiasis
  WSL De Silva, BK Dassanayake, TK Wijerathne, AA Pathirana, BD Gamage, S David, R
  Jamaldeen, PM Lambiyas
  Proceedings of Annual Scientific Sessions 2016, The College of Surgeons of Sri Lanka. August 2016
• Safe approach to treatment in lower trans-sphincter anal fistula
  Lambiyas PM, Gamage BD, Ranatunga RMAAN, Niroshana GAL
  Proceedings of Annual Scientific Sessions 2016, The College of Surgeons of Sri Lanka. August 2016
• Patterns of Bile Duct Injuries Observed during Endoscopic Retrograde Cholangiogram; 13 Years of Experience in a Tertiary Care Referral Centre
  MAC Lakmal, B Dasanayake, KAN Chanaka, A Pathirana, B Gamage, T Wijerathne, IWMP Wanigasooriya, M De Silva
  Proceedings of Annual Academic Sessions 2016, The College of Surgeons of Sri Lanka. August 2016
• Is Helicobacter pylori a problem in patients with dyspeptic symptoms in Sri Lanka
  GIDDAD Athukorala, N Ubayawardena, DMBT Dissanayake, D Weerasekera, B Gamage, SSN Fernando, K Samarasinghe, GWGS Gayani, LBAE Bogahawaththa
  Sri Lanka College of Microbiologists Bulletin 14(1) 2016
• Enhanced Recovery after Elective Colorectal Surgery—First-hand Experience from a Developing Country
  BD Gamage, R Ranatunga, N Harivallavan, P Lambiyas
  Wiley Publishing Asia Pty Ltd, Journal of Gastroenterology and Hepatology 30 (Sup 4): 408-425 December 2015
• Enhance Recovery After elective colorectal Surgery – six-year Sri Lankan experience
  N Harivallavan, BD Gamage, RMASN Ranatunga
  The Sri Lanka Journal of Surgery 33 (SI ISSN 1391 -491X – PP88), 71-72 August 2015
• Total Mesocolic Excision and Central Vascular Ligation in Tertiary Care centre
  N Hrivallavan DD Weerasekara, AA Pathirana, T Wijeratne, BD Gamage, HKKT Duminda, A Kamaladasa
  The Sri Lankan Journal of Surgery August 2015
• Laparoscopic Adrenalectomy for Adrenal Tumours in Adults – initial experience
  N Harivallan BD Gamage
  The Sri Lanka Journal of Surgery August 2015
• A Case of severe MRSA sepsis
  P Rathnayake, O Opatha, JLS Kanchana, GS Nanayakkara, B Gamage
  Proceedings of Annual Scientific Sessions of Faculty of Medical Sciences April 2015
• An unusual finding of necrosis in an inflammatory pseudo tumour
  B Seneviratne, B Gamage, A Rajapaksa
  Proceedings Booklet, Gastrointestinal, Bone and Soft Tissue Pathology International Conference, September 2015
• Management of symptomatic primary hyperthyroidism- Diagnosis, localization & surgical treatment: A retrospective analysis
  Samarasinghe T Gamage B, Wijeratne T, Bulughapitiya U, Karunasena N, Katulanda P
  The Sri Lanka Journal of Surgery 32(Supplement S1 ISSN 1391-491X),1(57) August 2014
• Symptomatic Primary Hyperparathyroidism: A Retrospective Analysis in A Tertiary Care Centre
  Thilina Samarasinghe BD Gamage, Thejana Wijeratne, Uditha Bulugahapitiya, Nayananjani Karunasena, Prasad Katulanda
  The Sri Lanka Journal of Surgery 32, 16 (OP 2.2) August 2014
• Enhanced recovery after colorectal surgery-our experience in a tertiary care centre Punchihewa CP Jayasinghe DJD, Gamage BD
  The Sri Lanka Journal of Surgery 32(Supplement S1 ISSN 1391-491X),1(53) August 2014
• Enhanced Recovery After Colorectal Surgery – Is It A Practical Approach to Our Settings?
  CP Punchihewa DJD Jayasinghe, BD Gamage, AAG Abeysinghe
  The Sri Lanka Journal of Surgery 32, 19 August 2014
• Hurricane Balloon dilatation of biliary strictures-is it a risk factor for post ERCP pancreatitis
  Alahakoon C Wijeratne T, Gamage B, De Silva M, Nanayakkara G, Samarasinghe T
  The Sri Lanka Journal of Surgery 32 (Supplement S1 ISSN 1391-491X), 1(44) August 2014
• A descriptive analysis of endoscopic retrograde cholangiography patients with suspected common bile duct calculi referred to a tertiary hepatobiliary centre in Sri Lanka
  Gamage BD Jayasinghe DJD, Wijeratne T, De Silva WMM, Abeysinghe AAG, Punchihewa CP, Karunaratne NPN
  The Sri Lanka Journal of Surgery 32 (Supplement S1 ISSN 1391-491X), 1(36) August 2014
• A small bowel adenocarcinoma presented with massive recurrent gastrointestinal haemorrhage
  Gamage B Ghouse S, Nanayakkara GS, Nandasena RGMS
  Conference proceeding Annual Academic Sessions; The Kandy Society of Medicine. February 2014
• WHO surgical safety checklist – The Sri Lankan experience
  Ponnambalam T Gamage B, Opatha OKDST, Balagobi B
  The Sri Lanka Journal of Surgery 31 (Supplement S1 ISSN 1391-491X), 1(58) August 2013
• Surgeons’ perception of iatrogenic biliary injury: is it an avoidable error or an accepted complication?
  De Silva WMM Jayasundara JASB, De Silva WTT, Ekanayake EMDNK, Gamage BD, Pathirana AA
  The Sri Lanka Journal of Surgery 31 (Supplement S1 ISSN 1391-491X), 1(15) August 2013
• Does surgeon’s risk-taking behaviour and learning curve have an impact on iatrogenic biliary injury?
  De Silva WMM Jayasundara JASB, De Silva WTT, Ekanayake EMDNK, Gamage BD, Pathirana AA
  The Sri Lanka Journal of Surgery 31(Supplement S1 ISSN 1391-491X), 1(14-15) August 2013
• Value of gastric access loop in extrahepatic biliary reconstruction
  JASB Jayasundara, MM De Silva, AA Pathirna, BD Gamage, IWPM Wangasooriya Annual Academic Sessions of Postgraduate Institute of Medicine April 2011
• Patterns of bile duct injuries observed during Endoscopic Retrograde Cholangiogram
  MAC Lakmal, B Dasanayake, KAN Chanaka, A Pathirana, B Gamage, T Wijerathne, IWMP Wanigasooriya, M De Silva
  Annual Academic Sessions, Clinical Society, Colombo South Teaching Hospital, February 2017
• Assessment of medical students’ attitudes towards E-professionalism and usage of Facebook in a developing country in South Asia
  Gamage B Lakmal C, Chanaka N, Ranatunga K
  Annual Academic Sessions, Clinical Society, Colombo South Teaching Hospital, February 2017
• Do Trainee Surgeons perform laparoscopic Cholecystectomy as well as they do open Cholecystectomy
  Gamage BD, Kumara TLAJ, Vitharana VH, Jayawardena MAR, Kollure SK
  Annual Scientific Sessions, College of Surgeons of Sri Lanka, August 2006
• Laparoscopic Hernia repair: An experience from a developing Laparoscopic centre Kumara TLAJ, Gamage BD, Vitharana VH, Jayawardena MAR, Kollure SK
  Annual Scientific Sessions, College of Surgeons of Sri Lanka, August 2006

Awards

• BMJ South Asia Award 2018 for “Project on Establishment on Enhanced Recovery protocol in a resource poor setting”
• Best oral presentation for “Assessment of medical students’ attitudes towards E- professionalism and usage of Facebook in a developing country in South Asia” at the Annual Academic Event, Clinical Society, Colombo South Teaching Hospital, February 2017
• “The Christie Hospital – Doctors Academy Fellowship” awarded by the Christie NHS Foundation Trust, UK

Other Faculties of University of Sri Jayewardenepura

• Faculty of Allied Health Sciences

Other Universities

• Honorary visiting Professor : Lahore Medical & Dental College in Surgery Lahore, Pakistan.
  Supervisor of Medical Undergraduates of the James Cook University, Queensland, Australia
  Supervisor of Medical Undergraduates of the University of Gothenburg, Sweden.