Hepatic tuberculosis: Comparison of miliary and local form

The clinical and pathological features of 22 patients, 11 males and 11 females 17-70 years of age (48.0±16.0 years), with hepatic tuberculosis were reviewed. Five patients had no evidence of extrahepatic tuberculosis (local form), and 17 had the miliary form. The clinical features of the miliary and local forms were similar with pyrexia, abdominal pain, hepatomegaly and body weight loss as the main manifestations. The biochemical findings were also quite similar in reversed albumin and globulin (A/G) ratio (2.9/3.5 vs. 3.2/3.4 g/dl) and disproportionate elevation of alkaline phosphatase (ALP) in comparison with bilirubin values but lower levels of alanine aminotransferase (ALT) (40.4±51.0 vs. 170.8±209.4 U/l; p<0.05) and ALP (208.5±138.9 vs. 389.5±271.1 U/l; p<0.05) in the miliary form. Patients with the local form had higher albumin (3.2±0.8 vs. 2.9±0.7 g/dl), aspartate aminotransferase (AST) (160.4±221.7 vs. 65.9±69.7 U/l), and gamma glutamyl-transpeptidase (γGT) (217.0±144.0 vs. 136.0±92.1 U/l), although the differences were not significant. The histopathological features of the miliary form were also similar to the local form with granuloma, caseation, acid-fast bacilli, fatty change and portal fibrosis as the main findings. The local form revealed more severe signs of hepatocytic damage while the miliary form was more wasting. The results suggest that the miliary and local forms of hepatic tuberculosis had quite similar clinical presentations and pathological features. The biochemical tests suggesting hepatic tuberculosis were reversed A/G ratio and disproportionate elevation of ALP.