MRI in 1999 located tiny syrinx in thoracic area that runs from T3-T9. Has been labeled as everything from dilated central canal to syrinx but its size has remained unchanged over the years. Symptoms include headaches, muscle twitching in calves, muscle loss in quads, and some numbness in legs. Handful of neuros have dismissed the syrinx as the issue because I can still lift weights, run, etc . . . Recently diagnosed with lumbar spinal stenosis but would like to see syrinx specialist to make final determination.