Dr. GPUP De Silva

1. Member of Sri Lanka Medical council (SLMC) - 32146

2. Registered in General Medical Council (GMC) - 7973374

3. Fellow of Royal College of Surgeons of England

4. Member of International Hepatopancreatobiliary Association

5. Member of College of Surgeons of Sri Lanka

6. Member of Sri Lanka Medical Association

Hepatopancreatobiliary Diseases

Colorectal diseases

Significance of amylase level measured in drain fluid on post-operative day 1 (DAD1) after pancreatic resection in predicting post operative pancreatic fistula: A multi-centre, prospective observational study.

1. de Silva GPUP, Karunadasa MSE, Rathnayake RMMSB. Laparoscopic appendicectomy: a safe option for basic laparoscopic training. Sri Lanka Journal of Medicine. 2021;30(1):99–103. DOI: http://doi.org/10.4038/sljm.v30i1.214
2. Jayawardene M. Nandasena MS, de Silva U, Pathirana A. An account of liver-related clinical data maintained in a single hepatopancreaticobiliary surgical unit using a cost-free user-friendly database management solution. Annals of Hepato-Biliary-Pancreatic Surgery.2021;25 Suppl 1: S304. DOI: 10.14701/ahbps.EP-106
3. Delwatta SL, Jayawardene M, De Silva U, Nandasena MS, Pathirana AA. Analysis of demographic factors, clinical and investigation findings of patients with pancreatic adenocarcinoma who presented to a tertiary referral center in Sri Lanka. Ceylon Medical Journal. 2022;67(2):59–62. DOI: http://doi.org/10.4038/cmj.v67i2.9632
4. de Silva GPUP, Udugampola DS, Ekanayake EMIB, Fonseka KVS, Karunadasa MSE. An underrated differential diagnosis for subcutaneous lumps: 26 cases of subcutaneous Dirofilariasis. Sri Lanka Journal of Surgery. 2021;39(2):31–3. DOI: http://doi.org/10.4038/sljs.v39i2.8827
5. de Silva GPUP, Varun S, Kariyawasam ST, Jayawardane MD, Lakmal MAC, Kariyawasam MD, Nandasena MS, Pathirana A, Weerasekera D. Socio-economic effects on informal caregivers of long-term hospitalized adult patients: A cross-sectional study. Ceylon Medical Journal. 2022;67(4):138-142. DOI: https://doi.org/10.4038/cmj.v67i4.9741
6. de Silva GPUP, Delwatta SL, Nandasena RGMS, Wanigasooriya IWMP, Pathirana AA. Endoscopic management of Lemmel syndrome: a rare, benign cause of obstructive jaundice. Sri Lanka Journal of Surgery. 2021;39(3):97–101. DOI: http://doi.org/10.4038/sljs.v39i3.8858
7. de Silva GPUP, Wanasinghe WMWA, Ambegoda ALAMC, Kumara MGSR, Balagobi B, Sosai CSP, Abeygunasekera AM. A case of large, benign, solitary fibrous tumour of the prostate causing obstructive uropathy. Journal of Clinical Urology.2022;15(3):217-221. DOI: https://doi.org/10.1177/2051415819833891
8. de Silva GPUP, Karunadasa MSE, Madugalle PSK, Rathnayake HMSSB. Afferent loop syndrome caused by stenosis of jejunojejunal anastomosis of Roux-en-Y reconstruction. Sri Lanka Journal of Surgery. 2019;37(2):30–1. DOI: http://doi.org/10.4038/sljs.v37i2.8631
9. de Silva GPUP, Rathnayake RMMSB, Karunadasa MSE. A case of an accidental ingestion of a toothbrush. Sri Lanka Journal of Surgery. 2021;39(1):67–9. DOI: http://doi.org/10.4038/sljs.v39i1.8762
10. de Silva GPUP, Anuradha HKGR, Nirmalasingham GR, Rathnaweera WS, Galketiya KB. Laparoscopic assisted left hemicolectomy and left nephrectomy-case report. Sri Lanka Anatomy Journal. 2018;2(1):38-41.6
11. de Silva GPUP, Rathnasena BGN, Karunadasa MSE. An unusual case of small intestinal obstruction secondary to a large primary enterolith. SAGE Open Med Case Rep. 2023 Jul 13;11:2050313X231185952. doi: 10.1177/2050313X231185952
12. Ranaweera K, Nandasena M, de Silva U, et al. Solid pseudopapillary neoplasm of the pancreas with multiple liver metastases successfully managed with staged resection.SAGE Open Medical Case Reports. January 2022. doi:10.1177/2050313X221101995
13. Sanjeewa R, Sanjeev V, Kariyawasam GMD, Lakmal C, Silva GPUP de, Gamage B. Hybrid endo-laparoscopic management of sigmoid colon perforation due to an accidentallyingested denture. Sri Lanka Journal of Surgery. 2021;39(1):65–6. DOI: http://doi.org/10.4038/sljs.v39i1.8793
14. Indunil L, Pathirana A, Nandasena M, De Silva GPUP. Synchronous gallbladdercarcinoma in a patient with distal bile duct cholangiocarcinoma: a histopathologicalsurprise. Sri Lanka Journal of Surgery. 2022;40(1):48–50. DOI: http://doi.org/10.4038/sljs.v40i1.8890
15. Rodrigo V, de Silva G, Jayasinghe D, Thalagaspitiya S, Srishankar S, Wickramarathne D, Karunadasa M. Valentino's syndrome: A rare and lethal differential diagnosis for acute appendicitis. SAGE Open Med Case Rep. 2022 Oct 24;10:2050313X221132069. doi: 10.1177/2050313X221132069
16. de Silva GPUP, Kumarasinghe KAPR, Jayathilake AB, Lakmal MAC, Pathirana AA. Extensive saponification following acute pancreatitis mimicking peritoneal carcinomatosis and liver metastasis. Sri Lanka Journal of Surgery. 2024;42(01):42-44. DOI: https://doi.org/10.4038/sljs.v42i01.8786
17. de Silva GPUP, Wijeratne T, Jayasekara P. An unusual case of central abdominal pain: Jejunal diverticulitis. Sri Lanka Journal of Surgery. 2024;42(2):44-45. DOI: https://doi.org/10.4038/sljs.v42i2.8800
18. Paramanathan V, Dayaratne DHM, De Silva U, Perera R, Pinto J, Udupihilla J. Thoracoscopic excision of a thymoma situated in an aberrant anatomical location. Galle Medical Journal. 2022;27(4):144-146. DOI: 10.4038/gmj.v27i4.8177

1. Complex colo-cutaneous fistula due to inflammatory bowel disease in a young male. 46^th Annual Academic Sessions, The College of Surgeons Sri Lanka 2017
2. Significance of amylase level measured in drain fluid on post-operative day 1, day 2, and day 3 after pancreatic resection: A multi-centre, prospective observational study" at HPB World Congress, Cape Town 2024

1. Endotherapy for post cholecystectomy biliary strictures (PCBS): A retrospective analysis with a minimum 2 year follow up study was presented in 15^th Hepato-pancreato-biliary World Congress, New York, 2022.
2. Significance of amylase level measured in drain fluid on post-operative day 1 (DAD1) after pancreatic resection in predicting post operative pancreatic fistula: A multi-centre, prospective observational study was presented at 50^th Annual Academic Sessions, The College of Surgeons Sri Lanka in collaboration with The Royal College of Surgeons of Edinburgh, 2022.
3. Early feeding after laparoscopic assisted pancreatico-duodencetomy with pancreatico-gastric anastomosis. 46^th Annual Academic Sessions, The College of Surgeons Sri Lanka in collaboration with The Royal College of Surgeons of Edinburgh 2017.
4. A Seasonal Killer; Variability of the Incidence of Necrotizing Fasciitis with the Weather Pattern. Sri Lanka Medical Association 133^rd Anniversary International Medical Congress, 2020.

Awarded the Best research on HPB Surgery for the study "Significance of amylase level measured in drain fluid on post-operative day 1 (DAD1) after pancreatic resection in predicting post operative pancreatic fistula: A multi-centre, prospective observational study" at 50^th Annual Academic Sessions, The College of Surgeons Sri Lanka in collaboration with The Royal College of Surgeons of Edinburgh, 2022