Many, many, many years ago when the Repo-stomach was not as... well, lumpy... I made the mistake of paying some brain-trust in Boston to out fit it with a slim gold ring.
Damn thing NEVER healed. Finally, several years later, on one unforgettable morning, I took a pair of pliers to it (my roommate was convinced I was insane... and well, I don't really blame her.)
Once the ring was removed, it healed within three hours. The body has its wisdom, you know?