Excess male breast tissue, or gynecomastia, involves the abnormal enlargement of the breast tissue. It can range from an enlarged nipple and areola to outright breasts similar to a woman's. It can be treated effectively based on the degree of gynecomastia. A slight enlargement of the breast tissue can be treated with ultrasonic liposuction alone. A moderate increase in breast size may require liposuction and the additional removal of tissue through a small incision on the border of the areola. Large breasts require removal of excess skin as well as the underlying breast tissue, resulting in scars around and under the areola. Learn more about male breast reduction here.