Tuberculous sacro-ileitis: two cases and radiological findings.

Infective sacro-ileitis is due to common bacteria, 25% being tuberculosis and 10% brucellosis. Slow progression characterizes joint tuberculosis, an uncommon variant of this disease. The onset is usually insidious, and early diagnosis requires a high index of clinical suspicion. We report two cases with tuberculous sacro-ileitis which initially mimicked brucellosis infiltration. Diagnosis of tuberculosis of the sacroiliac joint was established by fine-needle aspiration of joint and radiological imaging methods such as computerized tomography, magnetic resonance and three-phase bone scan. The current diagnosis and treatment of this condition is discussed based on these cases and a literature review.