School ager with end stage renal disease Pediatric Imaging Musculoskeletal May 22, 2026May 22, 2026 AP radiograph of the hand shows a lytic lesion in the fifth metacarpal with coarsening of the trabeculae and periosteal reaction along the radial aspect of the middle phalanges. The diagnosis was secondary hyperparathyroidism with a brown tumor of the fifth metacarpal. Related Published May 22, 2026May 22, 2026