Six months post using a breast pump, my nipples look darker and have purple areas in them; one is darker than the other. prior to pumping, they were always inverted. there is no scaliness, itch, warmth, or lump. could it be breast cancer?

Dark aereolae: During and following pregnancy the area around your nipples which is called the aereola tends to darken . They remain dark during breast feeding but will lighten up but not completely when you stop. This is a normal phenomenon and is not a sign of breast cancer.

Likely normal: But if worried, have a mammogram and exam by physician.

Unlikely: To be breast cancer maybe just residual changes after breast feeding.