Infant with a maculopapular rash on the buttocks Pediatric Imaging Musculoskeletal May 1, 2025February 20, 2025 AP radiographs of the bilateral lower extremities show diffuse, thick, symmetric periosteal reaction bilaterally. There is a suggestion of a metaphyseal notch on the proximal medial right tibial metaphysis (Wimberger corner sign). The diagnosis was syphilis. Related Published May 1, 2025February 20, 2025