Periosteal osteosarcoma arising from the rib and scapula: imaging features in two cases.
Periosteal osteosarcoma is an extremely rare chondroblastic osteosarcoma in the flat bone. There were authors reporting of two cases of periosteal osteosarcoma in the highly unusual sites. One of them arose from the rib, in a 17-year-old male, which appeared as a hypodense juxtacortical mass with periosteal reaction on CT. The other one arose from the scapula, in a 17-year-old female, which showed the intermediate signal intensity (SI) on T1-weighted image (WI), heterogeneous high SI on T2WI, and rim-enhancement on contrast-enhanced T1WI with cortical destruction on MRI.
Department of Radiology, College of Medicine, Yeungnam University, Daegu 705-717, Korea.
Jae Beom
JB
Hong
Department of Radiology, College of Medicine, Yeungnam University, Daegu 705-717, Korea.
Kil-Ho
KH
Cho
Department of Pathology, College of Medicine, Yeungnam University, Daegu 705-717, Korea.
Joon Hyuk
JH
Choi
D000293:Adolescent; D001859:Bone Neoplasms / Q000000981:diagnostic imaging*; D003287:Contrast Media; D005260:Female; D006801:Humans; D008297:Male; D012516:Osteosarcoma / Q000000981:diagnostic imaging*; D011859:Radiography; D012272:Ribs / Q000000981:diagnostic imaging*; D012540:Scapula / Q000000981:diagnostic imaging*
D003287:Contrast Media
Bone surface tumor; Chest wall; Osteosarcoma; Rib; Scapula