Pollakiuria: a rare and unique mode of revelation of silent dorsal syringomyelia in a young man-a case report.

Introduction: Syringomyelia is a rare pathology which is rarely revealed by urinary urgency. We report the case of a 20-year-old man with persistent urinary urgency and pollakiuria for two years, with no identifiable organic cause despite a thorough urological work-up. A transient episode of lower limb atony prompted spinal MRI, which revealed an isolated syrinx at the T6-T7 level, without associated Chiari malformation or conus medullaris involvement.