title: MRI of radiation-induced prostate sarcoma.
abstract: A patient with a history of pelvic radiation therapy for seminoma presented with a prostatic tumor, which appeared predominantly of high signal intensity on T2-weighted magnetic resonance images; low-signal-intensity tissue also extended to the pelvic sidewall. At surgical pathology, the tumor was determined to be radiation-induced sarcoma of the prostate, and the extraprostatic tissue was postradiation fibrosis.
authors.affiliation: Department of Radiology, University of Washington School of Medicine, Seattle 98195.
authors.forename: H V
authors.initials: HV
authors.lastname: Nghiem
authors.forename: F G
authors.initials: FG
authors.lastname: Sommer
authors.forename: J C
authors.initials: JC
authors.lastname: Moretto
mesh_terms: D005355:Fibrosis; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009381:Neoplasms, Radiation-Induced / Q000175:diagnosis* / Q000473:pathology; D016609:Neoplasms, Second Primary / Q000175:diagnosis* / Q000473:pathology; D010388:Pelvis / Q000528:radiation effects; D011471:Prostatic Neoplasms / Q000175:diagnosis* / Q000473:pathology; D011832:Radiation Injuries / Q000209:etiology; D012509:Sarcoma / Q000175:diagnosis* / Q000473:pathology; D018239:Seminoma / Q000532:radiotherapy; D013736:Testicular Neoplasms / Q000532:radiotherapy