MedlinePlus Medical Encyclopedia: Gynecomastia

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Gynecomastia

Gynecomastia is the development of prominent breast tissue in the male. The condition can develop during puberty and sometimes resolve on its own. Other causes of gynecomastia include exposure to estrogens, androgens (often taken secretly for body building), marijuana, and some medications. Rare causes include tumors, genetic defects, and chronic liver disease.

Update Date: 2/27/2006

Updated by: Robert Hurd, MD, Department of Biology, College of Arts and Sciences, Xavier University, Cincinnati, OH. Review provided by VeriMed Healthcare Network.

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