
Get answers to your Breast Cancer questions.
Dr. Tkaczuk’s Bio | Q&A Archive
Intraductal papilloma is the most common cause of spontaneous nipple discharge from a single duct.
The health care professional might feel a small lump beneath the nipple, but this lump cannot always be felt (palpable). A mammogram often does not show papillomas. Ultrasound may be helpful.
Other tests include: