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This repository contains the published and unpublished research of the Faculty of Medicine by the staff members of the faculty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 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 Tropical liver disease.(Elsevier, 2023) Beeching, N.; Dassanayake, A.The liver is frequently involved in infections that are prevalent in different regions of the tropics, and chronic liver disease, sometimes with multiple aetiological explanations, is an important cause of early morbidity and mortality. This article describes some hepatic and biliary problems that are seen in the tropics or can be imported from resource-poor settings. The epidemiology of hepatitis A is changing in many areas and hepatitis E is now recognized in a wide range of tropical and non-tropical settings. Vaccines have been developed against hepatitis E. Hepatitis B and C continue to cause chronic liver disease, cirrhosis and hepatocellular carcinoma, but these can be eclipsed in epidemiological importance by the sequelae of the emerging epidemic of non-alcoholic fatty liver disease in many parts of the tropics. The pathophysiology of acute and chronic liver disease caused by aflatoxins is better understood, as is the relationship of veno-occlusive disease of the liver to pyrrolizidine alkaloids. Self-poisoning with hepatotoxins is common in many countries. The diagnosis and management of cystic hydatid disease of the liver has been rationalized, based on a systematic approach to the classification of imaging findings.Item Optimizing intraoperative haemodynamics and haemostasis to enhance recovery after liver transplantation for cirrhosis in adults(College of Anaesthesiologists of Sri Lanka, 2022) Gunetilleke, B.; Welikala, N.; Ranamuni, R.; Jayaweera, D.; de Silva, T.; Amerasinghe, O.; Liyanage, C.; Dissanayake, J.; Appuhamy, C.; Fernando, M.; Thilakarathne, S.; Dassanayake, A.; Niriella, M.; Siriwardana, R.; Gilbert-Kawai, E.Cirrhosis with end stage liver disease is a leading cause of non-communicable disease related deaths in Sri Lanka. Liver transplantation remains the only curative treatment for such patients. Multi-organ dysfunction characteristic of end stage liver disease, surgical and anaesthetic factors, quality of the graft, coagulopathy and haemodynamic instability, all lead to the complexity of the perioperative care for liver transplant. Aggressive management focused particularly on maintaining intra-operative haemodynamic stability and optimizing haemostasis, directly impacts successful patient outcomes and forms the core of the anaesthetic strategy.Item Non-alcoholic fatty liver disease: a Sri Lankan perspective(The Sri Lanka Medical Association, 2022) Niriella, M.; Dassanayake, A.; de Silva, J.No Abstract availableItem Fifty liver transplants: a single centre experience of haemodynamic management in liver transplantation for cirrhosis [part 2](The College of Surgeons of Sri Lanka, 2021) Gunetilleke, B.; Ranamuni, R.; Jayaweera, D.; Welikala, N.; Kerner, V.; Hettiarachchi, D.; Munasinghe, N.; Withanage, R.; Wickremasinghe, N.; Hewage, S.; Fernando, M.; Hettiarachchi, D.; Niriella, M.; Dassanayake, A.; Thilakaratne, S.; Wijesuriya, R.; Liyanage, C.; Siriwardana, R.; Dissanayake, J.; Wijesuriya, N.; Rodrigo, U.; Rodrigo, U.; Mudalige, A.; de Silva, J.Globally, an estimated one million deaths occur annually due to complications of cirrhosis. Cirrhosis with end stage liver disease [ESLD] is a leading cause death due to non- communicable diseases in Sri Lanka. Non-alcoholic fatty liver disease [NAFLD] and alcohol related liver disease [ARLD] are the principal causes of ESLD due to cirrhosis in Sri Lanka. Liver transplantation remains the only curative treatment for such patients. Multiorgan dysfunction and hemodynamic instability characteristic of ESLD adds to the complexity of perioperative care in liver transplantation. Maintenance of stable hemodynamics including optimal hemostasis forms the core of the anaesthetic strategy in liver transplantation.Item Fifty liver transplants: a single centre experience of haemodynamic management in liver transplantation for cirrhosis [part 1](College of Surgeons of Sri Lanka, 2021) Gunetilleke, B.; Ranamuni, R.; Jayaweera, D.; Welikala, N.; Kerner, V.; Munasinghe, N.; Withanage, R.; Wickremasinghe, N.; Hewage, S.; Wijesuriya, N.; Rodrigo, U.; Mudalige, A.; Fernando, M.; Hettiarachchi, D.; Dissanayake, J.; Niriella, M.; Dassanayake, A.; Thilakaratne, S.; de Silva, J.; Siriwardana, R.; WIjesuriya, R.; Liyanage, C.ABSTRACT: Cirrhosis with end stage liver disease (ESLD) is a leading cause of non-communicable disease related deaths in Sri Lanka. Liver transplantation is the only curative treatment for patients with ESLD. The complex multisystem involvement and unique cardiovascular profile characteristic of ESLD present formidable challenges during liver transplantation. Management of the rapid and varied hemodynamic changes during surgery requires an in depth understanding of the physiological effects of each intervention. Based on the current literature and the experience gained at our center during the management of 50 liver transplants, we present optimization strategies and perioperative hemodynamic interventions which we use to ‘Fast track’ recovery following liver transplantation. KEYWORDS: Liver transplantation, cirrhosis, non-alcoholic fatty liver disease, alcohol related liver diseaseItem Tropical liver disease(Elsevier Ltd, 2019) Beeching, N.; Dassanayake, A.ABSTRACT: The liver is frequently involved in infections that are prevalent in different regions of the tropics, and chronic liver disease, sometimes with multiple aetiological explanations, is an important cause of early morbidity and mortality. This article describes some hepatic and biliary problems that are seen in the tropics or can be imported from resource-poor settings. The epidemiology of hepatitis A is changing in some areas, and hepatitis E is now recognized in an increasing range of tropical and non-tropical settings. Vaccines have been developed against hepatitis E. Hepatitis B and C continue to cause chronic liver disease, cirrhosis and hepatocellular carcinoma, but these can be eclipsed in epidemiological importance by the sequelae of the emerging epidemic of non-alcoholic fatty liver disease in many parts of the tropics. The pathophysiology of acute and chronic liver disease caused by aflatoxins is better understood, as is the relationship of veno-occlusive disease of the liver to pyrrolizidine alkaloids. Self-poisoning with hepatotoxins is common in many countries. The diagnosis and management of cystic hydatid disease of the liver has been rationalized, based on a systematic approach to the classification of imaging findings. © 2019Item Incidence and predictors of metabolic syndrome among urban, adult Sri Lankans: a community cohort, 7-year follow-up study(European Association for the Study of Diabetes, 2017) de Silva, S.T.; Niriella, M.A.; Kasturiratne, A.; Kottahachchi, D.; Ranawaka, U.K.; Dassanayake, A.; de Silva, A.P.; Pathmeswaran, P.; Wickremasinghe, R.; Kato, N.; de Silva, H.J.BACKGROUND AND AIMS In 2007, we reported a 38.9% prevalence of metabolic syndrome (MetS) in an urban, adult population. Published data on incident MetS from South Asia is lacking. This study investigated the incidence and risk factors for MetS after a 7-year follow-up of the initial cohort. MATERIALS AND METHODS: The study population (selected by age-stratified random sampling from the Ragama MOH area) was screened in 2007 (aged 35-64 years) and re-evaluated in 2014 (aged 42-71 years). On both occasions, structured interview, anthropometric measurements, liver ultrasound, biochemical and serological tests were performed. MetS was diagnosed on established International Diabetes Federation (IDF 2012) criteria. Total body fat (TBF) and visceral fat percentage (VFP) were measured in 2014, using impedance. Abnormal TBF was defined as >32% for females and >25% for males. Abnormal VFP was defined as >10% for both sexes. Non-alcoholic fatty liver disease (NAFLD) was diagnosed on established ultrasound criteria, safe alcohol consumption (Asian standards: <14 units/week for men, <7 units/week for women) and absence of hepatitis B and C markers. RESULTS: 2137/2967 (72.0%) of the initial cohort attended follow-up [1229 (57.5%) women; mean-age 52.4 (SD-7.7) years]. 1000/2137 [548 (54.8%) women; mean age 57.5 years (SD-7.74)] had MetS (prevalence-46.8%). Out of 1246 individuals who initially did not have MetS in 2007, 318 [225 (70.8%) women; mean age 57.5 (SD 7.7) years] had developed incident MetS after 7 years (annual incidence-2.13%). Comparison of incident MetS with those with no MetS in 2014 is shown in Table 1. On logistic regression, female sex (OR 3.6, p<0.001), central obesity [OR 4.58, p<0.001], BMI >23kg/m2 [OR 4.84, p<0.001], increase in weight 2%-5% [OR 2.02, p<0.001], increase in weight >5% [OR 5.3, p<0.001), increase in waist circumference (WC) 5-10-cm [OR 3.68, p<0.001], increase in WC >10cm [OR 10.34, p<0.001] and NAFLD (OR 2.44, p<0.001) in 2007 were independently predictive of incident MetS in 2014. Abnormal VFP [OR 4.23, p<0.001] and abnormal TBF [OR 5.25, p<0.001] were also associated with incident MetS. CONCLUSION: In this prospective community study, the annual incidence of MetS was 2.13%. Female gender, increase in weight and WC from baseline and the presence of NAFLD predicted the development of incident MetS. Obesity at baseline was the only defining individual component of MetS that predicted future MetS.Item Tropical liver disease(Elsevier, 2015) Beeching, N.; Dassanayake, A.The liver is frequently involved in infections that are prevalent in different regions of the tropics, and chronic liver disease, sometimes with multiple aetiological explanations, is an important cause of early morbidity and mortality. This article describes some hepatic and biliary problems that are seen in the tropics, or which may be imported from resource-poor settings. The epidemiology of hepatitis A is changing in some areas and hepatitis E is now recognized in an increasing range of tropical and non-tropical settings. Vaccines have been developed against hepatitis E. Hepatitis B and C continue to cause chronic liver disease, cirrhosis and hepatocellular carcinoma, but these may be eclipsed in epidemiological importance by the sequelae of the emerging epidemic of non-alcoholic fatty liver disease in many parts of the tropics. The pathophysiology of acute and chronic liver disease due to aflatoxins is better understood, as is the relationship of veno-occlusive disease of the liver to pyrrolizidine alkaloids. Self-poisoning with hepatotoxins is common in many countries. The diagnosis and management of cystic hydatid disease of the liver has been rationalized, based on a systematic approach to the classification of imaging findings.Item Common infective causes of abdominal pain(Sri Lanka College of Microbiologists, 2008) Dassanayake, A.Abstract available