Stewart-Treves syndrome

Stewart–Treves syndrome, refers to a lymphangiosarcoma, a rare complication that forms as a result of chronic, long-standing lymphedema. Although it most commonly refers to malignancies associated with chronic lymphedema resulting from mastectomy and/or radiotherapy for breast cancer, it may also describe lymphangiosarcomas that result from congenital and other causes of chronic secondary lymphedema. [Source: Wikipedia ]

Lymphangiosarcoma due to chronic lymphedema
May Cause
Increased risk of neoplasm