Supernumerary nipple

    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: Teaching Collection