Can you use automatic escape or Monster removal tactics after failing to Run Away?

[MrMooky]

5. Can you play a card that makes a monster leave combat or a card that lets you automatically run away, after a failed dice roll that determines if you ran away?

[MunchkinMan]

You can't retroactively undo a failed Run Away roll unless you play a card which specifically says you can do just that. In Munchkin Zombies, I can't think of a card that does this, though there are one or two in Munchkin that do.