[Urologic complications secondary to sacral agenesis].

In a series of 41 cases of caudal regression syndrome, 6 cases of misdiagnosed partial sacral agenesis are reported. All had been previously treated surgically and only poor results led to diagnosis. Major symptoms were recurrent urinary tract infection and/or incontinence. Associated anomalies were ano-rectal malformations (1 case), male hermaphrodism (1 case), lipoma and tethered cord in 3 patients, myelocystocele in 1 case. Neuro-surgical associations must be cured first. Urologic implications are the same as in other forms of neurogenic bladder. The authors stress the need for careful examination of plain standard X-rays.