According to the press release from Sen. John McCain’s office, the 80-year-old Republican senator was diagnosed with brain cancer following a procedure last week to remove a blood clot above his left eye. The tumor was found when the clot was being removed. After he missed the healthcare debate this past week, many feared the surgery was much more serious than initially thought. Senator McCain will likely have chemotherapy and radiation in order to treat the cancer.

Following a routine annual physical, Sen. John McCain underwent a procedure to remove a blood clot from above his left eye on Friday, July 14 at Mayo Clinic Hospital in Phoenix. Surgeons successfully removed the 5-cm blood clot during a minimally invasive craniotomy with an eyebrow incision. Tissue pathology reports are pending within the next several days.

“The Senator is resting comfortably at home and is in good condition. His Mayo Clinic doctors report that the surgery went ‘very well’ and he is in good spirits. Once the pathology information is available, further care will be discussed between doctors and the family. In the meantime, his Mayo Clinic care team will not be conducting interviews.”

The office of Senator McCain also released the following statement:

Senator McCain received excellent treatment at Mayo Clinic Hospital in Phoenix, and appreciates the tremendous professionalism and care by its doctors and staff. He is in good spirits and recovering comfortably at home with his family. On the advice of his doctors, Senator McCain will be recovering in Arizona next week.”

As available, more information on Senator McCain’s progress will be made public. –Sen. McCain’s office

According to CNN’s Dr. Sanjay Gupta who had direct contact with McCain’s medical team, “average survival for malignant glioblastoma tends to be around 14 months with treatment.”  The outliers to that survival stat are 10% who live up five years, according to a 2009 study cited by CNN.

Shortly after the press release, social media has been full of well wishes and prayers for the Senator McCain. Senate Majority Leader Mitch McConnell (R-Ky) released this statement on twitter.