Senator John McCain was told he would need a small blood clot above his left eye, removed. In the minimally invasive procedure, doctors found an aggressive type of brain tumor known as a glioblastoma, a highly malignant form of cancer known to spread quickly.

Though the prognosis for this type of diagnosis is "not very good", McCain and his medical team are looking forward. McCain's doctor said that McCain could return to the Senate while undergoing treatment, and his Mayo Clinic care team will determine when, or if, he can get back to work. Known to many for his strength and being a fighter, McCain will surely be anxious to get back to work.

For more information on Senator McCain's condition, click here.