Breast augmentation is the surgical placement of breast implants to increase fullness and projection of the breasts or to improve symmetry of the breasts. Clinically referred to as augmentation mammoplasty, the procedure is used cosmetically to :

Enlarge a naturally small breast, most commonly the result of heredity

Restore breast volume lost following pregnancy, as a result of breast-feeding or due to weight loss

Achieve better symmetry when breasts are moderately disproportionate in size and shape