Regional Anesthesia Versus General Anesthesia on Circulating Tumor Cells (CTC)

There are two different types of anesthesia that the investigators can use for subjects undergoing breast surgery. The first type is called "general anesthesia" (GA) which is when a person "goes to sleep" with a breathing tube and then receives intravenous (IV) pain medicine during and after surgery to minimize surgical pain. The other type of anesthesia is called "regional anesthesia" (RA), or "nerve blocks" which numb up the nerves that supply the breast area. By doing this type of anesthesia, subjects often don't go "to sleep" with a breathing tube, instead, they get heavy IV sedation and take a "deep nap" during the surgery.