Sacrococcygeal dysgenesis.

Congenital sacrococcygeal dysplasia is an uncommon though important cause of neuropathic bladder disease leading to progressive renal damage. In 2 cases described herein and featuring long-standing incontinence and recurrent infections, the concomittant musculoskeletal abnormalities had been treated for years, while the urinary tract condition had been largely neglected until urinary diversion or unilateral nephrectomy were required.