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Radiology, Vol 191, 825-831, Copyright © 1994 by Radiological Society of North America

ARTICLES

Periosteal Ewing sarcoma

LG Shapeero, D Vanel, M Sundaram, LV Ackerman, P Wuisman, TW Bauer, S Neuenschwander, G Contesso, C Janney and DJ McDonald
Department of Radiology, Institut Gustave-Roussy, Villejuif, France.

PURPOSE: To evaluate the imaging and histopathologic findings and clinical course of patients with periosteal Ewing sarcoma (PES). MATERIALS AND METHODS: Conventional radiographs, computed tomographic (CT) scans, and magnetic resonance (MR) images in 10 adolescents and one adult were evaluated for the extent and character of PES. RESULTS: Ten of 11 masses were in the proximal extremities and one in the fibula; nine were diaphyseal and two, metadiaphyseal. Radiographs and CT scans showed a subperiosteal mass that did not invade the medullary cavity, was contiguous with and elevated the periosteum, and produced a Codman triangle and periosteal reaction. No PES exhibited osseous or cartilaginous matrix calcifications. MR imaging and histopathologic examination helped confirm the sparing of cancellous bone and the subperiosteal location. CONCLUSION: PES differs from the more common medullary and soft-tissue Ewing sarcomas in location, marked male predominance, and lack of presenting metastases. Except for the absence of matrix calcifications, PES resembles other periosteal sarcomas in imaging characteristics and a less aggressive clinical course.


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M. D. Murphey, J. S. Jelinek, H. T. Temple, D. J. Flemming, and F. H. Gannon
Imaging of Periosteal Osteosarcoma: Radiologic-Pathologic Comparison
Radiology, October 1, 2004; 233(1): 129 - 138.
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