A rare case of tuberculous abscess on the anterior abdominal wall

Intramuscular tuberculosis (TB) is a rare manifestation of extrapulmonary TB because of the lower rate of survival and multiplication of Mycobacterium tuberculosis in striated muscle. A 27-year-old woman with no previous history of tuberculosis presented with painless, progressive swelling of the anterior lower abdomen. Abdominal ultrasonography and computed tomography (CT) scan revealed a well-defined, enhancing thick wall cystic mass in the lower rectus abdominis muscle extending to pectineus muscle. Open drainage and wide debridement were performed before prescribing antituberculosis drugs.