Figure 22. Septic arthritis. (a) Radiograph of the left shoulder in a 14-year-old HIV-positive boy demonstrates marked soft tissue swelling inferomedial to the glenoid. (b) High resolution ultrasound in the same child demonstrates a large complex collection within the infraglenoid bursa. Multiple granulomata were isolated from synovial biopsies, and empirical anti-tuberculous chemotherapy was commenced. Neither Mycobacterium tuberculosis or non-tuberculous mycobacterium were identified on microscopy or culture.
