Gynecomastia defines breast modification in men, giving them a feminine appearance, both in form and volume, prominence, areola size, and the structure of the tissue is characterized by an important glandular component.
Gynecomastia sometimes occurs as a consequence of weight gain, but most often it appears to be an isolated problem, even more disruptive, for example in puberty when it is most common physiological. It can also be caused by hormone supplements (in sports) or drug use that interferes with the production of androgenic or estrogenic hormones. Rarely can be associated with endocrine disturbances.
The most effective treatment is subcutaneous mastectomy.