Periosteal chondroma (juxtacortical chondroma).
D000328:Adult; D001859:Bone Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology; D002648:Child; D002812:Chondroma / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D010521:Periosteum / Q000601:surgery; D011859:Radiography; D013977:Tibia / Q000000981:diagnostic imaging