This type of breast reconstruction uses your own tissue, including the skin, fat and sometimes a muscle, to create a new breast shape. The tissue used to create the breast shape is called a flap. This type of reconstruction is commonly called flap or autologous reconstruction. Tissue is most commonly taken from your tummy (lower abdomen), but can also be taken from the buttock, inner thigh or back. The area the tissue is taken from is known as the donor site.