Cancer-battling US Senator John McCain hospitalized

US Senator John McCain, who is fighting an aggressive form of brain cancer, was in a military hospital Wednesday to treat "normal side effects" of his therapy, his office said.The 81-year-old former prisoner of war and 2008 Republican presidential nominee was diagnosed in July with a brain tumor known as a glioblastoma, after doctors found a blood clot over his left eye during a routine checkup.McCain underwent surgery at the time in his home state of Arizona, and has been treated with radiation