A 20-year-old Ethiopian woman presented to the orthopaedic clinic with a 6-week history of a painful mass on the anterior aspect of her chest wall above the left breast. It appeared suddenly and increased in size. There was a history of anorexia and weight loss but no cough, haemoptysis, night sweats nor fever. There was no past medical history or family history. She had been resident in the UK for 2 years. On examination the patient appeared well. She was apyrexial with a normal pulse rate and blood pressure. There was a 6 cm × 4 cm swelling on the anterior chest wall at the level of the first and second ribs. It was firm, warm and tender. It was fixed deeply; the overlying skin was normal although it was hot. There was no associated lymphadenopathy. She had a mild hypochromic microcytic anaemia, normal white cell count and differential but the erythrocyte sedimentation rate was elevated to 54 mm/hr and C-reactive protein was 27 mg/litre. Her chest X-ray was reported as normal. Ultrasound showed an echo-poor septated area within which there were echogenic areas. In addition, there was destruction of the anterior quarter of the first rib with erosion of the superior border of the second rib. A computed tomography scan revealed a soft tissue mass with associated rib involvement (Figure 1). In addition, there was a subcarinal calcified lymph node but there was no parenchymal pathology. In view of the rapid progression, she was admitted for urgent biopsy. Following incisional biopsy, tissue was taken for histopathology and microbiology. Histology confirmed the diagnosis of tuberculosis. Culture grew a light growth of Mycobacterium tuberculosis that was sensitive. She was commenced on quadruple therapy. At 6-month follow up, symptoms had settled, the swelling had subsided and her inflammatory markers were all normal.