(CNN) Sen. John McCain, 80, has been diagnosed with a primary glioblastoma, a type of brain tumor, Mayo Clinic doctors directly involved in the senator's care told CNN exclusively. McCain is recovering "amazingly well," according to a statement from his office. "The news of my father's illness has affected every one of us in the McCain Family," tweeted Meghan McCain on Wednesday. 'Aggressive tumor'His doctor said McCain was oriented, with good balance and no headaches or seizures. Still, one 2009 study reported that almost 10% of patients with glioblastoma may live five years or longer, according to the American Brain Tumor Association.

Source: CNN July 20, 2017 00:14 UTC