Breast asymmetry, or a different size or shape between breasts, is extremely common in women. Differences tend to become more marked during puberty, when the breasts are developing, and in most cases will resolve once growth is complete. Sometimes, these differences persist. There are many possible causes for breast symmetry, including congenital deformities, such as tuberous breast deformity or Poland’s syndrome; infection; pregnancy and breastfeeding; and cancer. If your breasts have become asymmetric after having previously been the same size, you should first see your regular physician for an evaluation.
If the differences are persistent and are not secondary to an underlying medical problem, surgical correction can address the asymmetry. While frequently both breasts may need to be addressed for the best result, some patients may require a lift, reduction, or augmentation of one breast only. However, it is reasonable to expect that you may still have some minor differences between the breasts even after surgery. Surgery is usually done on an outpatient basis, and most patients are able to return to work within one week.