Supernumerary breasts

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Supernumerary breasts

Synonyms: Accessory breasts | Polymastia

A rare breast malformation characterized by the presence of accessory breasts with a complete ductal system areola and nipple in addition to two normal breasts. The accessory breast tissue mostly lies along the milk lines. It is often not recognized until puberty when it begins to respond to regular hormonal fluctuations and may develop the same changes as normal breasts throughout life.

Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview.

Reference: Access aggregated data from Orphanet at Orphadata.

Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version April 2024

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Supernumerary breasts?

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Clinical Trials

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