I have had mild to severe pain in my right flank for almost 4 years, in fact, the 4 year anniversary is approaching in April when the first CT Scan was done....3 more and still no diagnosis. In addition, my neuro has had a C and L Spine as well as brain MRI....he thought MS, but brain was fine as was C and L spine. Pain has gotten worse as of late, with sharp pains when I am sitting down and make a movement. Whats noticable is when I am driving and turn, when I turn, sharp pain in the right flank. Back is usually very sore by the end of the day. Neuro wants to do another brand and C spine MRI....Its quite depressing that no diagnosis can be made....what could be causing this? I've seen urologist, neurosurgeon and neurologist in addition to my PCP.........who's left to see?