Although rarely discussed, enlargement of the male breasts is a common condition. Gynecomastia affects approximately 40 to 60 percent of men to some extent. This most commonly is related to changes at puberty, weight gain, various drug reactions or, rarely, a specific medical condition. The specific enlargement can be unilateral or bilateral. It can involve fat enlargement only, breast tissue enlargement or, usually, a combination of both.
Men who feel self-conscious about their appearance are helped with breast reduction surgery. The procedure removes fat and/or glandular tissue from the breasts, and in extreme cases, excess skin, resulting in a contoured chest that is flatter and firmer. The technique depends on the amounts of breast tissue and extra skin present. Liposuction occasionally can correct the problem by itself if the skin is elastic and the problem is almost entirely fatty. Usually, however, it is done as part of removing the excess breast tissue and, if necessary, skin to assure that the remaining tissue is smooth everywhere. An examination and discussion is the only way to know exactly what you need.
The American Society of Plastic Surgeons provides more general information.