Feb 1, - Complications Of Breast Surgery And Silicone And Saline Breast Implants include: infection (bacteria and mold which can be released from the implant into the body) surgical risks. anesthesia risks. chronic breast pain, breast or nipple numbness. capsular contracture. scar tissue. hardened and misshapen breasts. Over the past few years, much attention has been focused on the safety of silicone gel-filled breast implants. Some women who have them have complained of.