Et Tumor, Brute?

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

Detailed walkthrough
If you choose to find the diagnostic scanning module, you must go to the heavily irradiated and ghoul infested Vault 34. You can find the vault north-northwest of the NCR's Camp Golf or east of the NCR Sharecropper Farms near New Vegas. It is recommended that you bring a good supply of RadAway and Rad-X. There will be golden geckos on the way in as well as the ghouls 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'.
 * Drop 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 Auto-Doc is on the back wall. Interact with it and the option to take the item will appear (you can turn around the way you came to leave after this if you are only here for the Auto-Doc).

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 translates to "And you, Brutus?", showing Caesar's dismay in seeing Brutus taking part in his assassination and betrayal.
 * 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. Caesar's headaches were more likely to have been caused by a motor function disorder, causing him to fall regularly ("falling sickness"). Other theories on this include Epilepsy, migraines, and even malaria.
 * If after Arcade is given as a slave the player speaks to him and says "The world needs Caesar more than it needs you" Arcade will respond "Victrix causa diis placuit sed victa Catoni" which can be translated as "the victorious cause pleased the gods, but the conquered cause pleased Cato." This is a quote from the Latin poem Pharsalia by Lucan, in which the historical figure of Caesar is portrayed as the main antagonist, and the main hero, the historical figure of Cato Uticensis, is eventually forced to commit suicide, being unable to defeat Caesar.

Bugs

 * Completing the quest via offering Arcade Gannon to Lucius causes a show stopping bug whereby Caesar is not woken from his coma and is permanently stuck. Only his coma message box will show when interacting with him even though that quest is marked complete. The reason is a developer omission of 3 lines of scripting for that specific quest outcome.

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