title: Metaphyseal chondroblastoma of bone.
abstract: This report documents the ninth example of a chondroblastoma localized to the metaphysis of a long bone. The tumor appeared as a lytic lesion in the femoral neck of an 18-year-old boy and was associated with a periosteal reaction. When such neoplasms occur in an unusual location with associated periosteal reaction, chondroblastoma should be considered in the differential diagnosis.
mesh_terms: D000293:Adolescent; D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D002804:Chondroblastoma / Q000000981:diagnostic imaging* / Q000473:pathology; D003937:Diagnosis, Differential; D005266:Femoral Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology; D005272:Femur Neck / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D008297:Male; D011859:Radiography