Does anyone know if a Tarlov Cyst is the result of surgery gone wrong? My first surgery was for a L4/L5 compression with a thecal cyst on the facet joint. Then 3 weeks later my incision swelled up like a water balloon and my head felt like it had a vise around it as soon as I sat up. The surgeons assistant sent me for an MRI on my neck and finally after severe pain for another couple of weeks!-I demanded the surgeon and he figured out I had spinal fluid leakage. So off to surgery again. A "splinter" of bone had penetrated into the outer layer of the spinal cord and caused this to happen. Hmmm. :? Then about 7 weeks after that, my tailbone area started hurting. Surgeon recommends starting pt. Probably from sitting around too much. PT only seems to make it worse and now I am only on my side most of time cause standing, walking, sitting and OMG SNEEZing! Kills! MRI is ordered and surgeon and pain doctor both say "can't see anything that would be causing this", however the MRI report states a Tarlov Cyst. Thank god for the internet-cause I have to do my own research and diagnosis. I am having a cortizone shot tomorrow for pain even though they are not sure why! Make sense to you??? Please let me know your comments if you have been going through this horrible and debilitating pain.