title: Peritoneal osteosarcoma following irradiation therapy of ovarian cancer.
abstract: A peritoneal osteosarcoma occurring after irradiation therapy for cystadenocarcinoma of ovary is described. Only 6 cases of postradiation extraosseous osteosarcomas have been reported and none of them have arisen within the peritoneum. The clinical presentation and histopathology of this unusual tumor is presented with a review of the literature.
mesh_terms: D001344:Autopsy; D003537:Cystadenoma / Q000532:radiotherapy*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009381:Neoplasms, Radiation-Induced; D012516:Osteosarcoma / Q000209:etiology* / Q000473:pathology; D010051:Ovarian Neoplasms / Q000532:radiotherapy*; D010534:Peritoneal Neoplasms / Q000209:etiology* / Q000473:pathology; D011878:Radiotherapy / Q000009:adverse effects*