title: Extraosseous Ewing's sarcoma.
abstract: Extraosseous Ewing's sarcoma is an undifferentiated round-cell sarcoma that is indistinguishable histologically from Ewing's sarcoma of bone. Despite this similarity, it has been accepted as a distinct clinicopathologic entity. The authors describe a 53-year-old man who presented with extraosseous Ewing's sarcoma of the left subcostal chest wall. The lesion was demonstrated by radiography and computed tomography and confirmed by pathological examination.
authors.affiliation: Department of Radiology, Sir Mortimer B. Davis Jewish General Hospital, Montreal, Que.
authors.forename: C
authors.initials: C
authors.lastname: Bloom
authors.forename: A
authors.initials: A
authors.lastname: Lisbona
authors.forename: L R
authors.initials: LR
authors.lastname: Bégin
authors.forename: M
authors.initials: M
authors.lastname: Pollak
mesh_terms: D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012512:Sarcoma, Ewing / Q000000981:diagnostic imaging* / Q000473:pathology; D012983:Soft Tissue Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D013909:Thorax