Radiology-pathology conference: osteosarcoma in a cartilaginous exostosis of the femur.
Osteochondromas are common lesions in the metaphyseal segments of the long bones and are known to be able to degenerate into chondrosarcoma. We present the case of a 20-year-old patient with an osteosarcoma at the base of a cartilaginous exostosis and discuss the causal relationship between the two lesions on the basis of the radiologic and pathologic findings.
Meissner
Stefan A
SA
Department of General Orthopaedics, Westfalian Wilhelms University of Munster, University Hospital, Albert Schweitzer Street 33, 48149 Munster, Northrhine-Westfalia, Germany. sa.meissner@email.de
Vieth
Volker
V
August
Christian
C
Winkelmann
Winfried
W
D000328:Adult; D001706:Biopsy / Q000379:methods; D001859:Bone Neoplasms / Q000175:diagnosis* / Q000628:therapy; D003937:Diagnosis, Differential; D005269:Femur / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D007717:Knee / Q000000981:diagnostic imaging / Q000473:pathology; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D016609:Neoplasms, Second Primary / Q000175:diagnosis* / Q000628:therapy; D015831:Osteochondroma / Q000175:diagnosis* / Q000628:therapy; D012516:Osteosarcoma / Q000175:diagnosis* / Q000628:therapy; D010146:Pain / Q000209:etiology; D011859:Radiography