Estradiol and progesterone receptors in a case of fibromatosis of the breast.

A case of fibromatosis of the breast with positive cytosol assays for estradiol and progesterone receptors is described. Estrogen and progesterone receptors in fibromatosis have been only rarely reported in the English literature, and never, to our knowledge, in fibromatosis of the breast. We discuss the implications of these findings and review the literature.