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Gynecomastia Learning Center
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Gynecomastia is the development of abnormally large breasts in males. It is related to the excess growth of breast tissue, rather than excess fat tissue.
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Gyne refers to female, and mastia refers to the breast. Gynecomastia is strictly a male disease and is any growth of the adipose (fatty) and glandular tissue in a male breast. Not all breast growth in men is considered abnormal, just excess growth.
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Male breast enlargement (gynecomastia) is a normal condition that occurs during puberty in more than 60% of boys.
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