Redundant nerve roots of the cauda equina are characterized by the presence of elongated tortuous nerve roots with serpiginous or coiled appearance near areas of spinal canal stenosis.

This disease is not a new or separate disease, however, it is a part of the natural evolution of lumbar canal stenosis.

Differential diagnosis: It is important to differentiate this from other pathological diseases such as arteriovenous malformations or arteriovenous fistula.

Case courtesy of Dr Tamer El Bakry.