To treat a pituitary tumor with radiation, doctors may use a variety of techniques depending on the size and location of the tumor. Conventional radiation covers a wide area in and around the tumor and is usually given daily for several weeks.
In the show, Stannis Baratheon dies under the sword of Jamie Lannister, wielded by a woman to fulfill a promise to Catelyn Stark, to avenge the death of Renly Baratheon. You can state he died of internal complications.
Other warriors like Gannicus â who was strung up on a cross and left to die â were not so fortunate. We spoke with Spartacus showrunner Steven S. DeKnight about why Spartacus had to die, why he died the way he did, and a whole other planned section to the finale we did not see.