Table 3.
Yield of various investigations for the diagnosis of abdominal tuberculosis
| Yield | ||||
|---|---|---|---|---|
| Investigation | Gastrointestinal tract (n = 119) | Abdominal lymph nodes (n = 150) | Peritoneal cavity (n = 77) | Visceral Organs (n = 18) |
| AFB positivity | 43 (36.1%) | 44 (29.3%) | 23 (29.8%) | 8 (44.4%) |
| Granuloma | 65 (54.7%) | 68 (45.3%) | 26 (72.2%)† | 13 (72%) |
| Ascitic ADA (>30 U/L) | — | — | 35(53.8%)‡ | — |
| Imaging (USG/CT) | 97 (81.5%) | 134 (89.3%) | 71 (92.2%) | 18 (100%) |
| Tuberculin (Mantoux) | 77 (64.7%) | 103 (68.7%) | 52 (67.5%) | 13 (72%) |
†
Obtained from biopsy from the omentum from patients (n = 36) with dry type (n = 12) or mixed (n = 24) involvement.
‡
Patients (n = 65) with wet ascitic (n = 41) or mixed (n = 24) form of peritoneal involvement.
— Not applicable; ADA, Adenosine Deaminase; AFB, Acid Fast Bacilli; CT, computed tomography; USG, ultrasonogram.