Pleomorphic solid and cystic papillary carcinoma of the breast: two cases occurring in young women.

Solid and cystic papillary carcinoma is typically a localized indolent, low-nuclear-grade form of intraductal carcinoma of the breast that occurs in a cystically dilated duct and predominantly affects elderly women in the sixth to the eighth decade of life (mean age, 57 to 75 years). We describe two such lesions, both of high nuclear grade, of larger than average size, that occurred in women in their second decade, one of whom was pregnant.