Many men suffer from excess fatty tissue in the chest area. This excessive or sagging tissue may be a hereditary condition or may be the result of significant weight loss. Male breast reduction surgery, also called gynecomastia treatment, produces a flatter chest with a more masculine contour, allowing men to feel strong and secure in their bodies. Male breast reduction is generally performed as an outpatient procedure, and it may involve liposuction, excision, or a combination of the two.