Lump of brain

Lump of brain is an item that the Lone Wanderer finds in the Fallout 3 Add-on Point Lookout. It is a piece of the Wanderer's own brain in a glass jar which was removed by Tobar.

Location
The item is in the Engine Room of the Duchess Gambit, on the table next to Tobar. It can only be obtained after completing the quest Walking with Spirits and asking Nadine in the Ark & Dove Cathedral to remove your scar.