Gynecomastia is development of abnormally large breasts in males. It can occur in neonates, in adolescence and the elderly. In adolescent boys pubescent gynecomastia is a source of distress but in a large majority when it is not due to obesity it disappears in a couple of years. The causes of gynecomastia remain uncertain though they are attributed to an imbalance of sex hormones or the tissue responsiveness to them. About 4-10% of cases are due to drugs. Digoxin and Furosemide are reported to cause this condition more o if those are administered together. Breast prominence can be from excess adipose tissue or gland enlargement and sometimes a combination of both.

Treatment can be medical, if the cause is from a medication, by discontinuing or changing the medication. Surgical treatment is using liposuction or glandular removal through an incision around the areola or a combination of both in some cases. In very large enlargement of the breasts skin contouring procedures may be required that would result in additional scars.