Lumbar agenesis with sacral sparing: a case report

Caudal agenesis or caudal regression syndrome refers to a spectrum of malfo rmations involving the lower spine, which can result in significant progres sive or permanent neurologic defects. Caudal agenesis is frequently associa ted with other congenital anomalies of the axillary skeleton, hindgut, and genitourinary systems. Described in this paper is a patient who presented w ith multiple clinical and radiographic findings consistent with caudal agen esis. This case is unique in that there is to tal absence of the lumbar ver tebral column with an intact spinal cord and bony sacrum.