title: Osteocartilaginous lesion of the acetabulum resembling osteoid osteoma.
abstract: An unusual acetabular lesion radiographically resembling osteoid osteoma appeared in a 10-year-old girl recovering from trauma of the hip joint. Abnormal growth of cells of triradiate cartilage displaced by injury is a possibility that is supported by observations at open operation and biopsy.
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging / Q000473:pathology; D001859:Bone Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D010007:Osteochondritis / Q000000981:diagnostic imaging / Q000473:pathology*; D010017:Osteoma, Osteoid / Q000000981:diagnostic imaging / Q000473:pathology*; D011859:Radiography