Interesting. Early in my career I had the privilege to work with a surgeon who did indeed remove a live 40mm grenade from a man’s body, saving his life. It was during the Viet Nam war. So yes, it can happen.
It's on Twitter so it must be true!
With all the propaganda from both parties killing the crap out of each other it's impossible to know for sure.
Anyway here are the obligatory pics.
I wish my left collarbone looked like his.