Stewart-Treves syndrome
(STOO-wert-treevz SIN-drome)
A rare
disorder marked by the presence of an angiosarcoma (a
malignant tumor of blood or lymph vessels) in a person with
chronic (long-term) lymphedema. Lymphedema is a condition
in which extra lymph fluid builds up in tissues and causes
swelling, usually in the arm or leg. Stewart-Treves
syndrome usually occurs in patients with breast cancer who
develop chronic lymphedema after surgery to remove the
breast and lymph nodes under the arm.