Daar tsuwm: I have never heard medical acronyms, or whatever the correct term is, pronounced as words. Of course, it is so long since I was in a hospital, the usage may well have changed. FSH would have been "eff- ess-aitch" and I doubt that it has changed.

P.S/ As shown below, things have indeed changed. But all of ones cited came after I retired. Still, I did know some of them, but didn't remember them. Time wounds all heels.