Disc tear as well...I have 2, possibly 3 separate problems. I'll know in the next few months if my SI joint pain was radiation from the disc or not. But we were able to diagnose the piriformis/nerve 2 years before we FINALLY found the tear. MRIs never found it...I had to tell my Ortho to be extremely aggressive, so we did a discogram, which found the tear that 4 MRIs (1/year) couldn't.
I'm just glad the worst problem is the one that has a chance of being fixed!