Sounds like you're on top of it. I just wonder if there isn't something new that they can do with horseshoe kidney? I must research. My cousin has the same thing only she developed polycystic disease and is now on a transplant list. It certainly can manifest itself in many ways. Pat
Yes, I would tend to believe your doctor knows what he's doing, you've received the diagnostics necessary to rule out blc and now you've got this other dx of horseshoe kidney which can explain the hematuria.