[Two cases of Stewart-Treves syndrome observed at Sanshu hospital].

Stewart-Treves syndrome is angiosarcoma, which occurs in the chronic lymphedema of the upper or lower limbs. Presently, an effective therapy is not established. The survival period is only several months to one year. There are some reports that angiosarcoma will occur in the period of 5~15 years after a continuation of lymphedema of the extremities. Therefore, it is important to prevent lymphedema after surgical operations of primary disease and the lymphedema.