title: [Osteosarcoma: 2d malignant tumor following treatment with radiotherapy].
abstract: The authors report a case of postirradiation osteosarcoma that appeared in a seven year old girl after having received radiation therapy for a soft tissue sarcoma. The latent period between the two malignancies was 5 and a half years and the apparently radiation-induced osteosarcoma developed within the radiation field of the primary tumor.
mesh_terms: D001859:Bone Neoplasms / Q000209:etiology*; D002648:Child; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D006811:Humerus; D009364:Neoplasm Recurrence, Local; D009378:Neoplasms, Multiple Primary / Q000209:etiology*; D009381:Neoplasms, Radiation-Induced / Q000209:etiology*; D012516:Osteosarcoma / Q000209:etiology*; D012509:Sarcoma / Q000532:radiotherapy* / Q000628:therapy; D012540:Scapula; D012782:Shoulder; D012983:Soft Tissue Neoplasms / Q000532:radiotherapy* / Q000628:therapy
vernacular_title: Osteosarcoma: segundo tumor maligno consecutivo a tratamiento con radioterapia.