Thoracotomy

Thoracotomy is an incision into the chest (thorax), usually performed to allow surgical access to the heart, lungs, and other thoracic organs. This is a major operation, and the patient often suffers from pain in the aftermath.

I'm not sure why they gave this name to the mummy-like monster found in Skeleton Dungeon 2F. Sure, it has stitches all over its body, but still...