[Stewart-Treves syndrome--lymphangiosarcoma in sever lymphostasis of arm after mastectomy].

Stewart-Treves Syndrome ('STS) is a rare, extremely malignant and quickly progressing tumor. It is angiosarcoma developing in lymphostasis of an arm after radical mastectomy for cancer. The patient aged 80 years was followed-up, in whom STS had developed 19 years after radical mastectomy. Clinical diagnosis was confirmed by pathomorphological examination of dermal biopsy. Advanced age and severe associated diseases made it impossible to carry out specific therapy. The patient died of intoxication and increasing cardio-vascular insufficiency 9 months after the onset of the disease.