The major risks of breast implant surgery are deflation or rupture of the implant, capsular contracture (tightening of the scar, causing the breast to feel hard), pain, dissatisfaction with results, additional surgery, infection, hematoma/seroma, changes in nipple and/or breast sensation, inability to breast feed, calcium deposit formation, delayed healing, extrusion (implant breaks the surface of the skin) and necrosis (formation of dead tissue around the implant).