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Breast-nonmalignant
General
Neonatal breast
Author: Nat Pernick, M.D. (see Authors page)
Revised: 24 September 2012, last major update March 2010
Copyright: (c) 2002-2010, PathologyOutlines.com, Inc.
General
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● Identical in males and females at birth
● Nipple is small pit in center of thickened areola, becomes everted shortly after birth due to proliferation of mesenchyme underlying the areola
● Breast enlargement (uni- or bilateral) is present in up to 70% of neonates due to neonatal prolactin production, caused by falling levels of maternal estrogens; associated with production of “witch’s milk” in males and females
● Continued breast stimulation (squeezing or massaging breasts) may cause hypersecretory state to persist
Milk secretion:
● Resembles colostrum
● Contains water, fat, cellular debris
Terminology
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Epidemiology
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Sites
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Etiology
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Clinical features
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Prognostic factors
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Case reports
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Treatment
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Gross description (Macroscopy)
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Gross images
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Micro description (Histopathology)
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● Duct dilation without acini
Micro images
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AFIP Fig 1: neonatal breast ectasia with dilation of mammary ducts
Drawings
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Cytology description
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Cytology images
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Positive stains
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Negative stains
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Electron microscopy descriptions
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Electron microscopy images
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Molecular / cytogenetics description
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Molecular / cytogenetics images
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Differential Diagnosis
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● (link to topic)
Additional references
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End of Breast-nonmalignant > General > Neonatal breast
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