I'll try to make a long story as short as possible. Their is a stallion on the farm that had a hole cut through his side to drain an infection in his chest. He had tens of thousands of dollars worth of the finest vet care.
This is now years later. He looks healthy, is eating well, tons of energy, glossy coat, working as a breeding stallion. The drainge hole still has a tiny hole that has never healed and is still draining a small amount of puss.
Is their a forein peice of something in there?
What else could cause this to never heal?