Medicine
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This repository contains the published and unpublished research of the Faculty of Medicine by the staff members of the faculty
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Item The long-term impact of postcholecystectomy major bile duct injury on liver stiffness(BioMed Central, 2024-11) Jayasekara, A.; Tillakaratne, S.B.; Dasanayake, U.; Gishanthan, S.; Siriwardana, R.C.INTRODUCTION Iatrogenic bile duct injuries (BDI) are a devastating complication. Long-term impact of corrective hepaticojejunostomy (HJ) for such injuries on post -surgery liver stiffness is lacking. Hence the aim of this study was to explore the extent of hepatic fibrosis in a cohort of patients with Strasberg E bile duct injuries who underwent HJ after a minimum follow-up of six months.METHODS Out of 50 BDI presented over a period of 10-years, 19 patients with Strasberg type E, injuries that underwent HJ and completed a minimum 6-month follow-up [65.5 (7 -108)] period were selected. Data were prospectively collected on liver functions and liver stiffness was assessed using a Fibroscan. Their liver stiffness and degree of fibrosis was compared with (n = 38) age, gender and comorbidity matched controls.RESULTS The median age was 47 (30-70) years, with 63% females. Primary HJ was performed in 84%, with a median time from injury to HJ of 7 (1-39) days. The total bilirubin was 16.5 (11.2) µmol/L, Alkaline Phosphatase was 102 (27.2) U/L, and Platelet count was 256 (77) x 103. Liver stiffness (median 6.4 kPa) did not significantly differ from controls (5.3 kPa). Fibrosis assessment revealed comparable distribution of F0 to F3 fibrosis between the study and control groups (F0/F1: 68.4% vs. 84.4%, F2: 10.5% vs. 9.4%). However, all three patients with right hepatic artery injury (p = 0.003) and three of five patients with bile duct stricture had F3/F4 fibrosis.CONCLUSIONS Major BDI repair demonstrates comparable liver fibrosis in the absence of artery injury and anastomotic strictures. Measuring liver fibrosis could be valuable in the presence of arterial injuries or anastomotic strictures.Item Image guided naso-jejunal tube placement in paediatric liver transplant patients in low resource settings: Feasibility, technique, and outcome(Sri Lanka College of Paediatricians, 2024) Appuhamy, W.N.D.P.C.; Fernando, M.; Tillakaratne, S.B.; Gunathilake, M.B.; Ganewatte, E.; Gishanthan, S.; Jayakody, R.D.C.G.; Siriwardana, R.C.No abstract availableItem Characteristics and survival of advanced untreated hepatocellular carcinoma of non-viral etiology(Indian Society of Gastroenterology, 2024) Ekanayaka, S.P.N.; Luke, N.; Thilakarathne, S.B.; Dassanayake, A.; Gunetilleke, M.B.; Niriella, M.A.; Siriwardana, R.C.INTRODUCTION AND OBJECTIVES Hepatocellular carcinoma (HCC) is an aggressive tumor and presents late. The underlying etiology of HCC is changing rapidly. HCC in Sri Lanka is unique due to its predominant non-viral etiology (nvHCC) but lacks survival data.METHOD Data was collected from patients who presented with HCC from 2011 to 2018. There were 560/568 (98.6%) nvHCC. The patients who were not candidates for tumor-specific treatment (149/560 [26.7%]) were selected. Population characteristics, demographic data, tumor characteristics, survival and factors affecting survival were analyzed.RESULTS The median age was 64 years (range 30-88) and 86% (n = 129) were males. As many as 124 (83%) were cirrhotic. The overall performance score was 80%. Nearly 21/124 tumors were detected in cirrhotic screening. Tumors were single nodular in 32 (21%), up to three nodules in 28 (18%), more than three nodules in 33 (22%) and diffusely infiltrating in 56 (37%). The major venous invasions were present in 78 (52.3%). Extra-hepatic tumor spread was seen in 19 (12.7%) (lungs 13 [72.2%], bones 2 [11.1%]). The median survival of patients receiving palliative care was three months (1-43 months). Tumor size and cirrhotic status were significant predictors in univariate analysis.CONCLUSION A quarter of nvHCCs were not amenable to treatment at presentation as they had dismal survival.Item We report you decide(The College of Surgeons of Sri Lanka, 2023) Siriwardana, R.C.No abstract availableItem Role of interventional radiology in paediatric liver transplantation(Sri Lanka Medical Association, 2023) Fernando, M.; Gunetilleke, B.; Tillakaratne, S.; Siriwardana, R.C.; Appuhamy, W.N.D.P.C.; Padmasiri, U.G.M.INTRODUCTION: Interventional radiology advances have rendered it attainable to treat many of the complications of liver disease in a minimally invasive manner, and they play a major role in liver transplantation. OBJECTIVES: We aimed to assess the role of interventional radiology in a cohort of paediatric liver transplant patients. METHODS: Thirteen paediatric patients underwent liver transplantations from July 2020–February 2023 at Colombo-North Teaching Hospital, Ragama. Seven patients (53.84%) required special interventional radiological procedures. The need for an interventional radiological procedure was decided by a multidisciplinary team. A retrospective database was maintained with demographic and liver transplant data. RESULTS: Four patients (57.14%) requiring radiological intervention underwent procedures involving the thoracic cavity, and 5 patients (71.42%) who required radiological intervention underwent procedures involving the abdominal cavity. Two patients (28.57%) out of the seven who had interventional radiological procedures went through both abdominal and thoracic radiological interventions. As abdominal radiological interventions, splenic artery embolization (20%), hepatic venous stenting (20%), subhepatic drain placement (20%), and two abdominal pigtail drain insertions (40%) have been done. Four patients underwent pigtail insertion, which was performed as a thoracic radiological intervention. CONCLUSIONS: Interventional radiology plays a crucial role in the management of paediatric post-liver transplantation patientsItem A prospective study on drain fluid amylase as an indicator of clinical outcome in patients undergoing Whipple surgery(Sri Lanka Medical Association, 2023) Gishanthan, S.; Tillakaratne, S.; Bulathsinhala, B.S.K.; Uragoda, B.; Siriwardana, R.C.INTRODUCTION: Post-Whipple pancreatic fistula is defined as having a high drain fluid amylase (DFA) (>3 times of normal value). In our observation, DFA levels did not influence the clinical outcome. OBJECTIVES: To determine the drain fluid amylase levels on the outcome of patients METHODS: 48 patients who underwent the Whipple procedure from May 2015 to September 2019 were included. Serum amylase and DFA levels were assessed on days 1,3 and 5. Amylase levels were compared with the patient’s outcome and the nature of the pancreas. RESULTS: 20 patients had DFA over three times on day 1. Their median hospital stay (HS) and ICU stay did not differ from others (HS 8 vs. 9 days, p=0.545; ICU stay 3 vs. 3 p=0.95). On day three 15 patients had DFA rise and their hospital stay (HS) and ICU were comparable. (HS 8 vs. 9 days (p=0.083), ICU stay 3 vs 3 p=0.26). On day five 5 patients had DFA over three times and their median hospital stay (HS) and ICU stay were similar. Nature of the pancreas also did not correlate significantly with DFA more than 3 times. Although patients with DFA more than 3 times of normal value on day 1,3, and 5 had smaller duct diameter (D1 2.78mm vs 4.25mm p=0.86; D3 2.08mm vs 4.42mm p=0.165; D5 4.10mm vs 1.86mm p=0.44) non was statistically significant. CONCLUSIONS: DFA > 3 times on Day1,3 and 5 did not significantly alter the outcome of patients.Item The hidden threat of uncontrollable bleeding from the gallbladder bed during laparoscopic cholecystectomy(Elsevier, 2023) Rajeeth, G.; Tilakaratne, S.; Siriwardana, R.C.INTRODUCTION AND IMPORTANCE: Laparoscopic cholecystectomy is the treatment for symptomatic gallstone disease. However, a potential complication during this procedure is intraoperative bleeding resulting from vascular injuries, affecting around 0.9-1.9 % of cases. The most common bleeding site is the gallbladder bed, predominantly due to bleeding from the middle hepatic vein and its major branches. CASE PRESENTATION: This article presents an illustrative case of a superficial middle hepatic vein encountered during cholecystectomy during a donor hepatectomy. CLINICAL DISCUSSION: Safe dissection of the Calot triangle is crucial in cholecystectomy to prevent bile duct injuries. Attention is drawn to the proximity of middle hepatic vein to the gallbladder bed during dissection, which can lead to complication. Recent studies highlight significant anatomical variations, emphasizing the need for caution, especially in the patients with specific conditions. CONCLUSION: The careful surgical technique and awareness of anatomical variations, particularly regarding the proximity of the middle hepatic vein to the gallbladder bed during laparoscopic cholecystectomy. Surgeons are cautioned to maintain the focus throughout the procedure, even after achieving the critical view of safety. Preoperative evaluation of this anatomy with USS Venous Doppler and CT scan is minimize the risk of complications.Item Genetic and metabolic aspects of non-alcoholic fatty liver disease (NAFLD) pathogenicity(Springer, 2023) Samarasinghe, S.M.; Hewage, A.S.; Siriwardana, R.C.; Tennekoon, K.H.; Niriella, M.A.; de Silva, S.BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is the most common chronic liver disease showing a risingprevalence globally. Genetic predisposition plays a key role in the development and progression of the disease pathogenicity. MAIN BODY: This paper summarizes genetic associations based on their influence on several metabolic aspects such as lipid metabolism, glucose metabolism, hepatic iron accumulation and cholesterol metabolism toward the NAFLD pathogenicity. Furthermore, we present variations in some epigenetic characters and the microRNA profile with regard to NAFLD. CONCLUSION: As reported in many studies, the PNPLA3 rs738409 variant seems to be significantly associated with NAFLD susceptibility. Other gene variants like TM6SF2 rs58542926, MBOAT7 rs641738 and GCKR variants also appear to be more prevalent among NAFLD patients. We believe these genetic variants may provide insights into new trends in developing noninvasive biomarkers and identify their suitability in clinical practice in the future.Item Hepatocellular carcinoma in Sri Lanka: Where do we stand?(Sri Lanka Medical Association, 2013) Siriwardana, R.C.; Liyanage, C.A.H.L.; Jayatunge, D.S.P.; Dassanayaka, A.; Gunetileke, M.G.; Niriella, M.A.; Sirigampola, C.; Upasena, A.; de Silva, H.J.INTRODUCTION AND OBJECTIVES:Hepato-cellular carcinoma (HCC) is the sixth commonest cancer worldwide. We studied 105 consecutive patients with HCC in a single tertiary care centre. METHODS: North Colombo Liver Unit maintains a prospective database of HCC since September 2011. There were 105 entries by February 2013. Decision on the best form of treatment was taken at a multidisciplinary meeting. RESULTS: The median age at presentation was 63 years (range 12-79). Patients were predominantly male 93 (87%). Alcohol consumption above the safe limit was reported in 47 (45%). Hepatitis B surface antigen or C antibody was not detected in any of the patients. Background liver cirrhosis was evident in 59 (79%). Forty two (46%) patients had single nodular tumours while in 20 (21%) it was diffusely infiltrating. Portal vein invasion was seen in 22 (20 %). Median alpha-feto protein (AFP) level was 57.25 mg/ml (1.16- 94120 ng/ml; n=72). Twenty four (33%) patients had AFP level > 400u/l. Surgery was performed in 20 (19%), liver transplant in 2 (1.9%), radio frequency ablation or alcohol ablation in 8 (7.6%), trans arterial chemo embolization (TACE) in 44 (41.9%) and sorafmib was prescribed in four patients. Overall mean survival was 15 months. In the ‘no treatment’ group, mean survival was 4 months. Surgery group had a mean survival of 20 months. CONCLUSION: Hepatitis B is not a risk factor for HCC in Sri Lankans. Median survival without treatment is 4 months.Item Massive spontaneous haematoma of the liver following laparoscopic cholecystectomy(The College of Surgeons of Sri Lanka, 2023) Gunathunga, H.; Vishwajith, P.; Buddhika, U.A.; Tillalakaratne, S.; Siriwardana, R.C.No abstract available