The indirect hemagglutination test was used to study antibody titers to Entamoeba histolytica in different Malaysian populations. Eighty-seven percent of Orang Asli (western Malaysian aborigines) adults and 79% of Orang Asli children with acute amebic dysentery were seropositive. However, significantly fewer children (39%) with amebic dysentery had high titer responses (titer greater than or equal to 1:1,280) than did adults with amebic dysentery (76%). No correlation between proctoscopic severity and amebic titer was found. Forty-four percent of asymptomatic family members were seroresponders. Satak, an Orang Asli village located near towns, had significantly more seroresponders (32%) than did the isolated, deep jungle village, Belatim (4%).
We present a study of 288 hepatic resections carried out in Malaysia for the past fifteen years. First, we describe our indications for hepatic resectins which are not limited to hepatic trauma and hepatomas, but also include hepatic abscesses, cysts, intrahepatic calculi and hemangiomas. Second, we give a simplified classification of hepatic resections using accurate terminology. Third, we describe the safety of hepatic resections in our hands which we believe is due to specially designed surgical instruments and the accurate decision making process at surgery. We have had minimum postoperative mortality and no intraoperative deaths so far. Finally, while analysing each indication we have drawn vignettes from our experience for the past fifteen years.
Two hundred eight-eight hepatic resections performed over the past 15 years are discussed. The safety and success achieved are attributed to the original work in Malaysia on the anatomy of the liver and its anomalies, the use of surgical instruments specially designed for hepatic resection, various types of resections devised and studies on aids to liver regeneration after resection. The diversity of the principles and practice of surgery in the Western countries compared with those in Malaysia is illustrated.
A case of amoebiasis with colonic perforation and ruptured liver abscess is reported. It is rare for both these complications to occur in the same patient. The management is described and the literature reviewed
We reviewed 204 cases of liver abscess seen between 1970 and 1985. Ninety were found to be amoebic, 24 pyogenic and one tuberculous. The cause of the abscesses in the remaining 89 patients was not established. The patients were predominantly male, Indians, and in the 30-60 age group. The majority of patients presented with fever and right hypochondrial pain. The most common laboratory findings were leucocytosis, hypoalbuminaemia and an elevated serum alkaline phosphatase. Amoebic abscesses were mainly solitary while pyogenic abscesses were mainly multiple. Complications were few in our patients and included rupture into the pleural and peritoneal cavities and septicaemic shock. An overall mortality of 2.9% was recorded. The difficulty in diagnosing the abscess type is highlighted. The single most important test in helping us diagnose amoebic abscess, presumably the most common type of abscess in the tropics, is the Entamoeba histolytica antibody assay. This test should be used more frequently in the tropics.
Tuberculous liver abscess is uncommonly seen in our experience. We report a case of a 17-year-old boy who presented with typical clinical features of liver abscess, where a diagnosis of tuberculous liver abscess was made on laparotomy and biopsy of the abscess wall.
A retrospective analysis of 49 patients with 55 liver abscesses evaluated by diagnostic ultrasonography was made. The sonographic appearances were varied and non-specific. 96% of the abscesses were in the right lobe of the liver. Sonographic features which were frequently observed include (a) predominantly hypoechoic internal echotexture (64%) (b) distal sonic enhancement (98%) (c) well-defined margin with an abrupt transition between normal liver parenchyma and lesion (96%) and (d) absence of wall echoes (89%). A combination of these features has considerable diagnostic value. Distal sonic enhancement is of particular diagnostic importance. In equivocal cases the diagnosis can be quickly determined by percutaneous needle aspiration under ultrasound guidance.
This paper deals with two patients with typhoid fever in whom hepatic manifestations were the dominant and presenting features of the illness. The ability of typhoid hepatitis to simulate other common infectious diseases in this region is highlighted. It is recommended that typhoid hepatitis should be included in the differential diagnosis of patients presenting with fever and jaundice particularly in the tropics.
Single gas-containing pyogenic liver abscesses in 11 patients were studied by ultrasound and computed tomography (CT). On ultrasound, all abscesses were predominantly echogenic compared to the normal liver parenchyma. The gas collections appeared as hyperreflective areas arranged in clusters associated with acoustic shadowing and ring-down artifacts. Ten abscesses (90%) had ill-defined margins on ultrasound, causing underestimation of their sizes in these patients. All abscesses were shown to be multiloculated and had clearly defined borders on CT, not appreciated or mistaken for multiplicity of abscesses on ultrasound. Ultrasound may be inadequate in the evaluation of gas-containing liver abscesses, as they have complex echotexture in addition to ring-down artifacts, acoustic shadows and poorly-defined margins; leading to underestimation of abscess size, difficulty in identifying loculations and erroneous interpretation of multiplicity of abscess cavities.