This site is intended for healthcare professionals
Login | Register
Medical search

neonatal gynaecomastia

FREE subscriptions for doctors and students... click here
You have 3 open access pages.

Neonatal gynaecomastia

  • Overall, 65-90% of neonates have breast tissue (1)
    • results from the transfer of maternal and placental oestrogen and progesterone
    • persists up to several months

Notes:

  • neonatal breast enlargement is a normal response to falling levels of maternal estrogen at the end of pregnancy
    • these trigger the release of prolactin from the newborn's pituitary
  • neonatal breast enlargement is common is independent of the sex of the baby
  • generally bilateral - although may not be symmetrical; if unilateral then consider breast abscess; also infective mastitis can occur in a neonate and consider this especially if neonate is unwell and breast enlargement has features of infection (e.g. heat, erythema)
  • usually occurs in the first week of life and generally resolves within a few weeks (2) - but may persist for several months (1)
  • enlarged breast may discharge liquid; this usually resolves without treatment over a period of a few weeks
    • squeezing the breast to facilitate the discharge may lead to irritation, further enlargement, the persistence of the hypertrophied tissue, or, in rare cases, infection (mastitis or abscess)

Reference:

Links:

The information provided herein should not be used for diagnosis or treatment of any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions. Copyright 2016 Oxbridge Solutions LtdĀ®. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions LtdĀ® receives funding from advertising but maintains editorial independence. GPnotebook stores small data files on your computer called cookies so that we can recognise you and provide you with the best service. If you do not want to receive cookies please do not use GPnotebook.