title: [Primary intraosseous rhabdomyosarcoma].
abstract: We report a case of primary intraosseous pleiomorphic rhabdomyosarcoma located in the pelvis of a 21-year-old woman followed for 4 years. The lytic tumor involved the acetabulum and the isthma with moderate extension to soft tissue. First line chemotherapy was unable to arrest tumor progression. Hemipelvectomy with saddle prosthesis reconstruction was performed, but septic complications dictated a secondary inter-ilio-abdominal amputation. Recurrence-free remission was achieved for 4 years, suggesting this was indeed a primary tumor. Primary intraosseous rhabdomyosarcomas are exceptional. Bone localizations generally suggest metastasis from a primary tumor often situated in an intraperitoneal localization. When search for a primary tumor is negative, intraosseous lesions can be considered as primary tumors warranting curative treatment. Radical surgical resection is recommended within the framework of a multidiscipinary management protocol associating radiotherapy and chemotherapy to improve prognosis.
authors.affiliation: Département de Chirurgie Orthopédique et Traumatologique, Hôpital Charles Nicolle, 76031 Rouen Cedex, France. Franck.Dujardin@chu-rouen.fr
authors.forename: F
authors.initials: F
authors.lastname: Dujardin
authors.forename: G
authors.initials: G
authors.lastname: Bocquet
authors.forename: M
authors.initials: M
authors.lastname: Debled
authors.forename: C
authors.initials: C
authors.lastname: Cambon-Michot
authors.forename: P
authors.initials: P
authors.lastname: Vera
authors.forename: B
authors.initials: B
authors.lastname: Patricot
authors.forename: J M
authors.initials: JM
authors.lastname: Thomine
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D016025:Bone Transplantation; D003131:Combined Modality Therapy; D005260:Female; D006428:Hemipelvectomy; D006801:Humans; D020360:Neoadjuvant Therapy; D010384:Pelvic Bones / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D019919:Prosthesis Implantation; D011859:Radiography; D012208:Rhabdomyosarcoma / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*