The growth removed from Tipper Gore's thyroid was benign, said her surgeon at Johns Hopkins Medical Center in Baltimore. Mrs. Gore, the wife of Vice President and White House aspirant Al Gore, underwent surgery Tuesday to remove a nodule discovered on the right side of her thyroid gland. She was released the following day. "Mrs. Gore does not have cancer," Dr. Robert Udelsman said. Udelsman said Mrs. Gore's thyroid hormone levels would be monitored.