2. Remove the loose breast skin and subcutaneous tissue and make a hemispherical breast skin shell.

3. Remove the hyperproliferative breast tissue, correct the sagging breast shape, and make a hemispherical breast entity.

4. For adolescent breast hypertrophy with mild and moderate hypertrophy, the mammary duct should be kept unobstructed and intact as much as possible to preserve the lactation function of the breast.

Operation principle: the principle of breast reduction plastic surgery is to make the hypertrophy and sagging breasts achieve the purpose of good appearance and function after operation.