Symptomatic anterior spinal arachnoid diverticulum.

The authors report a case of symptomatic arachnoid diverticulum, which was located anterior to the spinal cord and covered the entire length of the spinal canal. The patient underwent cervical laminectomy and cystoperitoneal shunting with subsequent neurological improvement. The causes, clinical manifestations, diagnosis, and management of spinal arachnoid diverticulum are discussed.