Oncologist defends his work at a VA hospital

The radiation oncologist whom regulators accuse of mishandling scores of radioactive seed implants at the Philadelphia veterans' hospital told a Congressional panel that while he "could have done better" with some implants, his patients over all received effective treatment for their prostate cancer. Speaking publicly for the first time, Gary Kao, PhD, said at the hearing at the Veterans Affairs hospital that he was not a "rogue physician" and that his academic credentials and an absence of malpractice lawsuits underscored that point.