Steroid hormone receptors in female breast angiosarcomas.

Breast angiosarcoma is an extremely rare neoplasm usually affecting premenopausal women. Previous reports suggest that it is hormone-dependent. A case of primary breast angiosarcoma in a 16-year-old patient is presented in which the presence of estradiol, progesterone, and testosterone receptors was investigated. The histological findings initially revealed a simple angioma, but four months later the histological picture had completely changed, showing an angiosarcoma. Our data indicate a lack of receptors for steroid hormones in this tumor, which argues against the hypothesis presented in the literature.