This study was conducted to determine the role of a relatively new tumor marker, CA-195, in the diagnosis of hepatocellular carcinoma and metastatic hepatic carcinoma, and in distinguishing between these two conditions. CA-195 levels were measured using a commercially available immunoradiometric assay (Tandem-R CA-195) in 30 black inpatients with hepatocellular carcinoma, 15 metastatic carcinoma, 10 with amoebic liver abscess, 10 with cirrhosis and 10 normal individuals at King Edward VIII Hospital, Durban. A cutt-off value of 10 u/ml was used. The sensitivity and specificity of CA-195 in hepatocellular carcinoma and metastatic carcinoma was 60% and 22%, and 87% and 42% respectively. False positive results occurred in 5 (50%) patients with amoebic liver abscess, 10 (100%) with cirrhosis and 2 (20%) normal individuals. These results indicate this tumor marker as of limited value in the diagnosis of hepatocellular carcinoma and metastatic carcinoma, and in distinguishing between these conditions.
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