Senior Fellow Greg Conko breaks down the fight over Avastin, a drug used to treat several types of cancer. The FDA is poised to rescind Avastin's approval for treating breast cancer. It will retain its approval for other cancers. This will make life difficult, and possibly shorter, for some breast cancer patients. Conko believes this battle boils down to one question: who decides which treatments patients can use? Will it be the FDA, or doctors and patients?