Bilateral angiosarcoma of the breast in a fourteen-year-old child.

Malignant vascular tumors are rare and angiosarcomas of the breast in patients under 21 years of age are exceedingly uncommon. In this report an angiosarcoma in the breast of a 14-year-old girl is described. She died nine months after mastectomy with recurrent disease in the bones and the contralateral breast. The etiology of most primary angiosarcomas is unknown. Secondary angiosarcomas can develop after radiotherapy and chronic lymphedema. The histology of this angiosarcoma is illustrated.