Genital and Reproductive Function:
J.Y. is a 43-year-old woman who has detected a lump in the upper outer quadrant of her left breast while performing her monthly self-breast examination. She is examined by her primary physician, who finds a single mobile, painless lump. A biopsy of the lump is done and shows probable malignancy. J.Y. is scheduled for surgery. There is no evidence of regional lymph node involvement. J.Y.'s tumor is thought to be responsive to estrogen.