Pts w/ syringomyelia, majority of drs say sm causes no pain, if a something foreign is centered in the cord, logically, how no pain? 1 of 2 questions.

Syrinx or cord canal: It depends. If it is a enlarged central canal and the fluid does not break into the cord tissue, then there may be no pain. If the central pain pathways are very stretched by a large dilated central canal, or, if the fluid has broken through the central canal wall and collected in the cord tissue, pain can range from mild to severe. Image shows a dilated central canal and not a true syrinx.