Interesting medical conditions where a steak is beneficial

A year or so ago on the Discovery channel there was a man who was backpacking in central or southern America and somehow got a worm or larva in the skin of his belly. Apparently it grew and grew for months and there was a noticeable bump on the surface of the skin where this grub was. I guess this type of larva comes to the surface of it's host maybe once a day or so then goes back under the skin making it hard to capture. He wanted to get it out alive and so he put a steak over the insect and it crawled through his skin up through the steak and he was able to capture it.

The bug was just above his belly button, and he said it came to the surface at night time. He said he just laid on his back with the steak centered over the insect while in bed. He thought of it as his pet since it didn't hurt/bother him and even had a pet name for it, I want to say it was some type of fly...