Question about Annihilation when used in combat.

[Thakgor]

I understand that using Annihilation against a monster in combat does not allow the player to loot the room or look for trouble, but if the monster is Annihilated does this entitle the player to the monster's treasure? The reason I ask is that it's implied in the rules that if the monster is removed the player still draws treasure. A ruling would be great because our gaming group was split on this.