Enterogenous cyst of the cauda equina. A case report and a review of the literature.

The clinico-pathological findings in a 38-year-old man with a progressive cauda equina syndrome and with a dorsal dermal fistula in the lower back are presented. The X-rays of the spine revealed fusion of the vertebrae L4-L5 and L5-S1, and the myelogram showed an intradural tumour, extending upto the level of L2. An enterogenous cyst, adherent to the right third lumbar radix was completely removed. The clinical and pathological data are compared to previous published cases and discussed in relation to the origin of the tumour.