Table 2 Contrasting miliary and local hepatic TB
| Â | Miliary Hepatic TB | Local Hepatic TB |
|---|---|---|
Prevalence | 79% | 21% |
Infection origin | Lungs | Gastrointestinal system |
Dissemination | Hepatic artery | Portal vein |
Tubercle size | 0.6-2.0Â mm in diameter | >2.0Â mm in diameter |
Location of tubercles | Lobules of liver | Near portal triad |
Clinical signs/symptoms | Cough, sputum production, hepatomegaly | Weight loss, hepatomegaly, jaundice |
Diagnosis | CT scan; liver biopsy is less helpful | Liver biopsy more helpful |
CT findings | Multiple, dispersed, low-density micronodules | Large, low-density nodules with calcification and peripheral enhancement |
Treatment | 4-drug regimen | 4-drug regimen; consider drainage of abscess or surgery |