Earlier today Senator John McCain’s office confirmed that he has been diagnosed with brain cancer. During a surgery on Friday at Mayo Clinic Hospital in Phoenix to remove a blood clot above his left eye, a tumor was discovered. According to a statement from the hospital: “tissue pathology revealed that a primary brain tumor known as a glioblastoma was associated with the blood clot.”

“Scanning done since the procedure (a minimally invasive craniotomy with an eyebrow incision) shows that the tissue of concern was completely resected by imaging criteria,” the statement added.

His doctors are reviewing a number of treatment options that may include a regimen of chemo and radiation. A number of individuals from former President Obama to Sarah Palin have taken to Twitter to express their support for the Arizona senator. His daughter Meghan McCain also released a heartfelt statement supporting her father in his recovery. It can be read here.