Caesar sleeps but doesn't awaken. I fear it is only a matter of days before death claims him.Lucius

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

Quick walkthroughEdit

Main Quest: Et Tumor, Brute?
Find a way to cure Caesar's brain tumor.
Decide to repair the Auto-Doc so it can do the procedure.
Decide to use your own medical knowledge, or your luck to do the procedure yourself. Need to pass a Speech check of 65, or a Medicine check of 75.
Sell Arcade Gannon into slavery as Caesar's personal doctor.
Go to Vault 34 and find a replacement diagnostic scanning module for the Legion's Auto-Doc.
Buy a doctor's bag, and surgical tools from the New Vegas Medical Clinic. You could also steal the tools from the first aid box in the room left of the counter.
Pass a Luck check of 9, or a Medicine check of 75.
Kill Caesar during the operation.
Leave Caesar unharmed during the operation.
To remain friendly with the Legion after Caesar's death, you must pass a skill check (Speech 50, Medicine 50, or a high Legion reputation) when speaking to Lucius.
Reward: 1,000 XP, Legion fame
Reward: 1,000 XP, Legion fame, 10 Aureus
Reward: 1,000 XP, Negative Karma, 10 Aureus.
Leads to: Arizona Killer

Detailed walkthroughEdit

Caesar is in a coma and is near death. Only an operation to remove the tumor from his brain will save him. There are several options for this quest:

  1. Use a set of surgical tools in conjunction with a doctor's bag. 75 Medicine or 65 Speech is required to offer the surgery option. Surgical tools can be bought at the New Vegas medical clinic for 999 caps or stolen from a first aid box on a stretcher in the adjacent room (the surgical tools won't spawn in the first aid box or in Dr. Usanagi's vendor inventory until the quest has been started).
  2. Trust in one's luck and perform the operation. 9 Luck is required for a successful operation.
  3. Install the automatic surgical unit into the Auto-Doc in Caesar's tent. The replacement diagnostic scanning module is found in the clinic room of Vault 34, located northwest of Camp Golf and east of NCR sharecropper farms (in Vault 34, walking in, take the first right to the stairway that will lead to the cafeteria. Drop down the hole, exit the room, and turn left. Follow the corridor and the signs for "clinic." The Auto-Doc is on the back wall. Interact with it and the option to take the item will appear).
  4. Sell Arcade Gannon into slavery as Caesar's personal doctor.
  5. Arrange for Caesar to die during the surgery.

Note: If Caesar dies, then with a "Liked" or higher reputation or passing either a Medicine 50 or Speech 50 check to Lucius, it is possible to remain friendly with the Legion.

Quest stagesEdit

10 Acquire a set of surgical tools.
11 A Doctor's Bag is also necessary to perform the surgery.
15 Acquire a functional diagnostic scanning module for Caesar's Auto-Doc.
20 Perform brain surgery on Caesar to remove the tumor which is killing him.
25 (Optional) Kill Caesar during the procedure. It might look natural...
30 Install the replacement diagnostic scanning module into Caesar's Auto-Doc.
35Icon checkUse the Auto-Doc to cure Caesar.
40Icon cross(Optional) Use the Auto-Doc to kill Caesar.
45 (Optional) Have Arcade Gannon enslaved as Caesar's personal physician.


  • The broken Auto-Doc may be in security station A instead of the clinic.
  • It will be impossible to offer Arcade Gannon to Caesar as a slave if he was recruited after having spoken to Caesar in private. He can still be offered to Lucius once Caesar has gone into his coma, or immediately after killing Caesar in his coma.
  • If Arcade was lost as a companion by betraying him in For Auld Lang Syne, sometimes the option to sell him into slavery will still be present. If you talk to Caesar, and then Lucius, you will be able to successfully sell Arcade into slavery, despite not have had leaving the tent, or even having access to Arcade. This will award the normal quest reward for selling Arcade into slavery.

Behind the scenesEdit

  • 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 character 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.


  • PCIcon pc 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.[verified]
Main quests
Act 1Ain't That a Kick in the Head · Back in the Saddle · By a Campfire on the Trail · They Went That-a-Way · Ring-a-Ding-Ding!
Act 2Wild Card (Wild Card: Ace in the Hole, Change in Management, You and What Army?, Side Bets, Finishing Touches) · The House Always Wins (I, II, III, IV, V, VI, VII, VIII) · Render Unto Caesar · Et Tumor, Brute? · Things That Go Boom · Kings' Gambit · For the Republic, Part 2 · You'll Know It When It Happens/Arizona Killer
Act 3No Gods, No Masters · All or Nothing · Veni, Vidi, Vici · Eureka!
Side quests
New California RepublicAnywhere I Wander · Back in Your Own Backyard · Bitter Springs Infirmary Blues · Boulder City Showdown · Can You Find it in Your Heart? · Climb Ev'ry Mountain · Don't Tread on the Bear! · Emergency Radio · Eye for an Eye · Flags of Our Foul-Ups · Hard Luck Blues · I Don't Hurt Anymore · I Put a Spell on You · Keep Your Eyes on the Prize · Medical Mystery · No, Not Much · Pressing Matters · Restoring Hope · Return to Sender · That Lucky Old Sun · The White Wash · There Stands the Grass · Three-Card Bounty · We Will All Go Together · You Can Depend on Me
Caesar's LegionBeware the Wrath of Caesar! · Caesar's Favor · Caesar's Foe · Caesar's Hire · Cold, Cold Heart · I Hear You Knocking · The Finger of Suspicion · We Are Legion
The StripBeyond the Beef · Bye Bye Love · Classic Inspiration · How Little We Know · Pheeble Will · Talent Pool · The House Has Gone Bust! · The Moon Comes Over the Tower
Freeside & Outer VegasBirds of a Feather · Bleed Me Dry · Debt Collector · G.I. Blues · High Times · Someone to Watch Over Me · The Coyotes · Wang Dang Atomic Tango
BoomersAnt Misbehavin' · Sunshine Boogie · Volare! · Young Hearts
Great KhansAba Daba Honeymoon · Cry Me a River · Don't Make a Beggar of Me · Oh My Papa
Powder GangBooted · I Fought the Law · Run Goodsprings Run · Why Can't We Be Friends?
Brotherhood of SteelEyesight to the Blind · Still in the Dark · Tend to Your Business
OtherCome Fly With Me · Crazy, Crazy, Crazy · Ghost Town Gunfight · Guess Who I Saw Today · Left My Heart · My Kind of Town · The Legend of the Star and A Valuable Lesson · Unfriendly Persuasion · Wheel of Fortune
Companion questsED-E My Love · For Auld Lang Syne · Heartache by the Number · I Could Make You Care · I Forgot to Remember to Forget · Nothin' But a Hound Dog · One for My Baby
Unmarked questsA Bit of Slap and Tickle · A Final Plan for Esteban · Access Powers · All Fired Up! · An Ear to the Ground · Andy and Charlie · Arizona Scavenger · Barton the Fink · Bear Necessities · Big Winner (Atomic Wrangler, The Gomorrah, The Tops, Ultra-Luxe, Vikki & Vance) · Bounty Killer (I, II) · Brotherhood Bond (I, II) · Caching in at the Cove · Cajoling a Cudgel · Claws Mended · Claws Out · Dealing with Contreras · Defacing the Humble Stone · Democracy Inaction · Don't Poke at the Bear! · Eddie's Emissary · Exhumin' Nature · Fight Night · Flogging a Dead Corpse · Friend of the Followers · Gland for Some Home Cooking · Harder, Better, Faster, Stronger · Hat's Entertainment · Help for Halford · Hidden Valley computer virus · Highway to the Danger Zone (I, II) · Honorary Rocketeer · I Love Bananas · Iron and Stealing · Keith's Caravan Charade · Laurifer Gladiator · Lenk's Bad Debts · Lily and Leo · Long-Term Care · Malleable Mini Boomer Minds · Maud's Muggers · Meeting an Equal · Missing a Few Missiles · Most Wanted · Not Worth a Hill of Corn and Beans · Old School Ghoul · A Pair of Dead Desperados (I, II) · Papers, Please · Pistol Packing · Playing on the Old Joana · Poor Meat Never Makes Good Soup · Powder to the People · Power to the People · Razzle Dazzle! · Reach for the Sky, Mister! · Rest and Resupply · Ringo's Caravan Rules · Rotface's Loose Lips · Saving (or Savaging) Sergeant Teddy · The Screams of Brahmin · Silus Treatment · Short-Term Treatment · Smooth-Talking Criminal · The Star Showdown · Strategic Nuclear Moose · Straus Calls · Strip Search · Suits You, Sarah · Tags of Our Fallen · A Team of Moronic Mercenaries · Thought for the Day · Tourist Traipse · Trudy's Radio Repair · A Trusted Aide · Useless Baubles or Fancy Trinkets? · We Must Stop Beating Like This · We Must Stop Meeting Like This · Wind-Brahmin Wrangler · You Gotta Break Out a Few Eggs · You Make Me Feel Like a Woman
Add-on quests
Dead MoneySierra Madre Grand Opening! · Find Collars (8: "Dog", 12: Christine, 14: Dean Domino) · Fires in the Sky · Strike Up the Band · Mixed Signals · Trigger the Gala Event · Put the Beast Down · Last Luxuries · Curtain Call at the Tampico · Heist of the Centuries · Big Winner, Sierra Madre
Honest HeartsA Family Affair · Arrival at Zion · Bighorners of the Eastern Virgin · Chaos in Zion · Civilized Man's Burden · Crush the White Legs · Deliverer of Sorrows  · Departing Paradise · Flight from Zion · Gathering Storms · Gone Fishin' · Happy Trails Expedition · Prisoners of War · Retake the Bridge · River Monsters · Rite of Passage · Roadside Attraction · Sanctity of the Dead · The Advance Scouts  · The Treacherous Road · The Grand Staircase · Tourist Trap
Old World BluesAll My Friends Have Off Switches · A Brain's Best Friend · Coming Out of Her Shell · Field Research · He Came... And Went · Influencing People · Midnight Science Fiction Feature! · Old World Blues · On the Same Wavelength · Picking Your Brains · Project X-13 · Sonic Emitter Upgrade · Welcome to the Big Empty · What's in a Name? · When Visitors Attack! · X-2: Strange Transmissions! · X-8 Data Retrieval Test · X-8: High School Horror! · X-13: Attack of the Infiltrator!
Lonesome RoadThe Reunion · The Silo · The Job · The Launch · The Tunnelers · The Divide · The Courier · The End · The Apocalypse
Community content is available under CC-BY-SA unless otherwise noted.