This reconstruction option uses the transverse rectus abdominis muscle (TRAM) to reconstruct the breast. Reconstruction is performed using a section of skin, fat, and muscle transplanted from the lower abdomen. In a pedicle flap, the flap remains attached to the original blood supply and is taken from the lower half of the abdomen and slid up through a tunnel under the skin to the breast area. The skin and fat is then shaped into the breast mound. In a free TRAM flap procedure, the skin, fat, blood vessels and muscle are all cut free from the abdominal area and the flap is then attached to blood vessels in the area of the breast using microsurgery, sparing weakness to the abdominal wall.