Right-sided colonic tuberculosis: a rare cause of ilio-psoas abscess.

Ilio-psoas abscess due to right colon origin is rare and normally occurs secondary to Crohn's disease, diverticulitis or cancer. We report a case of a caecal tuberculosis (TB) presented initially with an appendicular mass and systemic symptoms of fever and fatigue and 3 weeks after, with right-sided anterior thigh pain and found to have an ilio-psoas abscess. Colonoscopy and histology confirmed the diagnosis of caecal-TB. She had a CT drainage of the abscess and was discharged with anti-TB treatment and her drain in situ. Repeat pelvic MRI 10 days after treatment showed the abscess resolving and her systemic symptoms improving.