[Radiotherapy of malignant soft tissue tumors].

The treatment of choice for small low-grade lesions in soft tissues may well be wide or radical surgical resection alone. For all other lesions (UICC stage IIa and larger), multimodal treatment is recommended. Pre- or postoperative radiotherapy reduces the local failure rate to 5%-10%. A re-resection should be performed after non-oncologic resections. Irradiation offers an entirely credible alternative to radical surgery for desmoid tumors which are not resectable.