Wounds and a will to live cause unbelievable outcomes. I had an uncle who was in the German Army on the Eastern Front during WWII. He was shot in the eye. But the bullet must have lost a lot of energy before it hit him, because it settled behind his eye and in-front of his brain- though no one knew that when he was transported to the 1st aide station. Long story, but he credited his wound for saving his life, because his unit was almost all decimated and later surrender (none to return to Germany).
Due to the location of the bullet, they never removed it. One side effect was that if he leaned over for more than a few seconds, he would get a nose bleed.
Great guy, he was the eternal optimist. You could give him a crap sandwich and he would use it to fetilize his garden.