Hypertrophic Osteoarthropathy. Bone scan (above left) shows symmetric, bilateral, linear uptake in the femurs and tibias (black arrows) while the conventional radiographs of the distal femurs and proximal tibias (above right) show smooth, wavy periosteal reaction primarily involving the metadiaphyseal portion of the bones (white arrows).
Gastric Ulcer, Benign. Both images are close-ups of the stomach from a double contrast (i.e. air and barium) upper gastrointestinal series. They demonstrate radiating folds (green arrow) coursing to the base of a peristent collection of barium (white arrows) on the posterior wall of the body of the stomach. There is no significant mass effect and the folds radiate right to the base of the ulcer, both signs of benignity.
Haemochromatosis - hand arthropathy This patient punched a wall and was assessed in the ED for a boxer's fracture. Pictured: Overhanging (hooked) osteophytes of the metacarpal heads of the right index. The overhanging osteophytes ( aka hooked or beak-like osteophyes) at the heads of the metacarpals of index and long fingers are typical for haemochromatosis. Chondrocalcinosis is not prominent in this case. The main differential diagnosis of haemochromatosis is CPPD.