Cauda Equina Syndrome Caused by Epidural Venous Plexus Engorgement in a Patient with May-Thurner Syndrome.

The purpose of this article is to present a case of cauda equina syndrome in a patient with incomplete motor and sensory deficits due to epidural venous plexus engorgement, owing to May-Thurner syndrome successfully treated with venous iliac stenting. A 40-year-old woman, with previous history of deep vein thrombosis and miscarriages, gradually developed right leg and back pain, with functional limitation, perineal hypoesthesia, and sphincter incontinence. Magnetic resonance imaging revealed epidural venous plexus engorgement and cauda equina roots involvement.