title: [Ewing sarcoma: changes after radiation and chemotherapy].
abstract: We retrospectively studied 52 cases of Ewing sarcoma to elucidate the pattern of healing and/or recurrence after radiation and chemotherapy. Persistent soft tissue mass was a sign of failure to respond to therapy. Repair or healing of lytic or blastic bone changes were slow and often minimal, and usually bone changes became gradually stable over 3 years. After bone changes became stable, localized new bone changes represented recurrence or secondary malignant neoplasms.
authors.affiliation: Department of Radiology, Massachusetts General Hospital.
authors.forename: S
authors.initials: S
authors.lastname: Ehara
mesh_terms: D000293:Adolescent; D000328:Adult; D001859:Bone Neoplasms / Q000188:drug therapy / Q000453:epidemiology* / Q000532:radiotherapy; D002648:Child; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D011379:Prognosis; D012189:Retrospective Studies; D012512:Sarcoma, Ewing / Q000188:drug therapy / Q000453:epidemiology* / Q000532:radiotherapy