A mother I'm working with was told she MUST wean to have a biopsy on a suspicious breast lump identified during pregnancy. She actually has 2-3 lumps they wanted to check out, but only 1 was considered suspicious. Her doctor refused to do anything if she refused to wean (her baby was 3 weeks old at the time). I encouraged her to seek a second opionion with another medical center of the HMO. She hesitently did. They chose to do an ultrasound and discovered several CYSTS--benign!!! Her baby is now 7 weeks old and nursing beautifully. A case where breastfeeding was ALMOST sacrificed on the altar of ignorance. The second doctor told her the ultrasound is able to pick up lumps the mammogram may miss, and is especially helpful in lactating women. If this is true, why is ultrasound not used more when breast lumps are identified in lactating women?