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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.
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