[Sacral dysgenesis and its neuro-urologic pathologic correlates]

As an aspect of the caudal regression syndrome the dysgenesis of the sacrum, the correlating neuro-urological pathology, and a classification are presented, based on the literature and a report of ten cases. The sacral osteological anomaly--as a numerical and as a structural anomaly--and the neuro-urological defect exist to different extents. Therefore the diagnosis is made at several ages. The type of neurogenic bladder disturbance is the "lower neuron lesion". Use of a proper diagnostic approach and conservative or surgical therapy according to the type of lesion improve the prognosis by protecting the upper urinary tract and also ameliorate the social hardships resulting from incontinence. Irregularly correlated are disturbances of the rectum and of the lower extremities.