Et Tumor, Brute?

Et Tumor, Brute? is a side quest in Fallout: New Vegas.

Quick walkthrough

 * Find a way to cure Caesar's brain tumor.
 * To perform surgery using the Auto-Doc in Caesar's tent, it must first be repaired using a diagnostic scanning module. This can be found in Vault 34.
 * Alternatively, a Medicine skill of 75 or Luck 9 can be used. This option will also require the use of a doctor's bag, and surgical tools bought from the New Vegas Medical Clinic.
 * With either of the above methods, you have the option to kill Caesar during the procedure. To remain on good terms with Caesar's Legion after his death, you must pass a skill check (Speech 60 or Medicine 50) when speaking to Lucius.
 * If Arcade Gannon is an active follower, you have the option to sell him into slavery as Caesar's personal doctor (Karma loss), thereby completing the quest. To do so, have him wait outside Caesar's tent. Talk to Lucius inside.

Detailed walkthrough
If you choose to find the diagnostic scanning module, you must make your way towards the radiation and ghoul infested Vault 34. You can find the vault north-northwest of the NCR's Camp Golf or east of the NCR's Sharecropper Farms near New Vegas. It is recommended that you bring several Rad Away and Rad-X, as the entrance is brimming with radiation. Because of this, there will be several golden geckos on the way in and once entering the vault you'll find approximately 20-30 ghouls of various types inside.

Simply go to the room marked 'clinic'.


 * As you walk in take your first right to the stairway that will take you to the 'cafeteria'.
 * Fall down the hole, exit the room and turn left.
 * Follow the corridor (and signs for the 'clinic'), until you see the room marked 'clinic'.

The clinic contains a safe so you'll know you're in the correct room. The Auto-Doc is near the southeast side of the room.

Behind the scenes

 * The title of this quest is a play on Julius Caesar's famous last words,"Et tu, Brute?"from Shakespeare's play Julius Caesar which in English is "And you, Brutus?"
 * The quest is an elaborate allusion to Julius Caesar, who did indeed suffer from an ailment that caused severe headaches and was also a secret from the public.