Breast augmentation and augmentation mammoplasty (colloquially known as a "boob job") are plastic surgery terms for the breast-implant and the fat-graft mammoplasty approaches used to increase the size, change the shape, and alter the texture of the breasts of a woman. As a primary reconstruction, augmentation mammoplasty is applied to effect a post–mastectomy breast reconstruction, the repair of the chest wound consequent to the removal of a cancerous breast; to correct congenital defects of the breast(s); and to correct congenital defects of the chest wall. As an elective, cosmetic surgery, primary augmentation changes the aesthetics – of size, shape, and texture – of healthy breasts. The surgical implantation approach affects the global augmentation of the breast hemisphere using a breast implant filled with either saline solution or silicone gel; moreover, the surgical augmentation approach can include the application of transplanted autologous skin flaps harvested from the woman's body. The fat-graft transfer approach augments the size and corrects contour defects of the breast hemisphere with grafts of autologous adipocyte fat tissue, drawn from the woman's body.