Acute Cauda Equina Syndrome Secondary to Lumbar Disc Herniation Mimicking Pure Conus Medullaris Syndrome

A 49-year-old male presented with a rare case of acute cauda equina syndrome secondary to a sequestrated lumbar disc mimicking pure conus medullaris syndrome.He consulted the emergency room of Otsu Municipal Hospital because of saddle anesthesia and complete urinary retention which had started 2 days before admission.Additionally,he complained of constipation and impotence.Abnormality of the deep tendon reflexes,sciatica,and leg weakness were not recognized.