Anisomastia or breast asymmetry is defined as the visible difference in size, shape or position of the breast.
Small differences can be often observed in many women. These are considered as natural and are not classified as anisomastia.
Anisomastia can be observed more frequently in women and rarely in males. It may be congenital or due to various illnesses or surgical operations including removal of cysts, tumors, total or partial mastectomy or breast aesthetic surgery. Anisomastia may include:

  • Unilateral hyperplasia
  • Unilateral hypoplasia
  • Hypoplasia in one side and hyperplasia in the other
  • Bilateral asymmetrical hyperplasia
  • Bilateral asymmetrical hypoplasia
  • Unequal bilateral breast ptosis
  • Differences in the shape of breast
  • Anomalies of the chest wall

According to the type and cause of anisomastia surgeon will select the appropriate procedure or combination of them.

The procedure

Correction of anisomastia may include reduction or augmentation mammoplasty, in one or both breasts, in order to achieve similar size, shape and breast position.
The operation may be done under general anesthesia.


During breast asymmetry correction recovery, breasts will be wrapped in gauze dressings. An elastic bandage or support bra will minimize swelling and support the breasts as they heal.
Postoperative medications may include pain pills and an antibiotic to prevent infection.
Resume exercise and normal activity is possible after seven days