Gynecomastia Topic Guide

Gynecomastia (Enlarged Breast in Males) Gynecomastia (Enlarged Breast in Males): Gynecomastia is an enlargement of the male breast; glandular tissue, not excess fat. Causes of gynecomastia are thought to be hormonal fluctuations during puberty. Certain conditions are associated with gynecomastia and include: Treatment of gynecomastia is generally with medication or surgery if necessary.


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