Also known as: accessory nipple, polythelia

Clinical Features:

• Common anomaly which can arise anywhere along the "milk line," which extends from the axilla to the groin, and occasionally at other sites
• May be single or multiple
• Variations include nipple only, nipple and areola, areola only or development of a complete supernumerary breast (polymastia).
• May be macular or may resemble skin tags
• Sometimes associated with urologic or other developmental anomalies

Histologic Features:

• Dome shaped with a central umbilication
• Mammary ducts opening into the epidermis or into pilosebaceous units
• Scattered bundles of smooth muscle, nerves and prominent blood vessels

Cases associated with this book:

Supernumerary nipple
Author: Stephen Lyle, M.D., Ph.D.

Conference: DermatopathologyConsultations.com Teaching Collection