Cutaneous lymphangiosarcoma of Stewart-Treves.

Lymphangiosarcoma of an edematous extremity is a highly malignant cutaneous neoplasm seen most often ten years after a successful radical mastectomy. The sarcoma presents with an ecchymosis and/or purplish cutaneous nodules on the edematous arm; it spreads through the bloodstream and is fatal in most cases. A case is presented which shows some typical and some unusual features of this disease.