In a press release sent from the office of Senator John McCain it was stated that John McCain has been diagnosed with a brain tumor. The tissue containing the tumor has been removed.
On July 14, 2017, Senator McCain underwent surgery to remove a blood clot from just above his left eye. The surgery took place at the Mayo Clinic in Phoenix Arizona. Today the Mayo Clinic stated that tissue pathology showed that a brain tumor is associative to the blood clot.
According the press release from the office of Senator McCain, "The Senator and his family are reviewing further treatment options with his Mayo Clinic care team. Treatment options may include a combination of chemotherapy and radiation."
As stated in the press release, Senator McCain is greatly appreciative of all of the support he has received over the past several days.