Abstract
The present study defines the clinical presentation and examines possible aetiological factors in the occurrence of hepatocellular carcinoma in Karachi, Pakistan. Histologically proven cases of hepatocellular carcinoma (n = 366) were seen over 16 years. The maximum frequency occurred in the age range 51-60 years (range: 8-98 years), and the male to female ratio was 2.5:1. The place of birth, place of longest stay and various addictions did not have any association with the occurrence of liver carcinoma. Only three cases had a history of liver cancer in their immediate relatives. The main presenting features were right hypochondrial mass (85%) and pain (79%). The liver size did not correlate with the duration of illness. alpha-Fetoprotein titres were more than 200 ng/mL in 62% of cases. Using a reverse passive haemagglutination assay method, HBsAg and anti-HBc positivity were 32% and 60%, respectively. Antigen figures rose to 60% when radio-immunoassay was used; 41% of cases were anti-delta positive (EIA). Aflatoxin contamination varied between 10% and 17% in various localities of Karachi, suggesting an association of liver cancer with HBsAg and aflatoxins. Histopathologically 73% were trabecular, and 2.5% were mixed hepatocholangiocarcinomas. Follow-up was available in 45% of cases. All except two (1.2%) died within 6 months.
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