(These will be removed as soon as Karev sees them, they're him and his (ex)wife Izzie!)
There are also photos of him and his two younger siblings, Aaron and Amber. He's standing rather protectively, even though he's really young and the only one not smiling in the picture. Looks underfed and overexerted for a child.
And one of his twelfth birthday, cake in front of him but a hard to miss bruise on his jaw. He doesn't look unhappy, but it's no exciting birthday by any means. Cropped mostly out of the frame is his mother, his siblings again in the shot.