LUMBOSACRAL NEURENTERIC CYST IN AN INFANT - CASE-REPORT

The case of a combined intra- and extraspinal neurenteric cyst in an i nfant is reported. This case is unique because an intraspinal cyst was not suspected clinically until large numbers of squamous epithelial c ells were obtained at lumbar puncture performed as part of a workup fo r a septic entity. The cyst extended from an intradural location ventr al to the conus medullar-is at L-1 through a ventrolateral defect in t he S-4 vertebral body to communicate with a large presacral component. The entire cystic cavity was lined by stratified squamous epithelium. The possible pathogenesis of this lesion is discussed.