The plastic surgeon is dedicated to carrying out your procedure with due and proper care. His efforts and choice of materials, however, offer no guarantee of achieving any intended results. Medicine may be based on science, but in itself is not an exact science. Every human body is different, and medicine is not capable of knowing all bodily processes, let alone predict these.
Your doctor will explain in all conscience the treatments most likely to be successful in your case. However, the outcome or complications, if any, can never be fully predicted. If you request to undergo a procedure, you should be prepared to bear the risk. Your doctor will in any event commit himself to properly treating any complications, or have them treated by colleagues. In case of a less than favourable outcome, he will propose possible additional corrections. However, treatment of complications or additional treatments are not included in the prearranged operation budget.