Posterior sagittal anoplasty combined with ventricular peritoneal shunting: an unusual complication.

This report is intended to point out the potential difficulties in patients with the combined abnormalities of anorectal agenesis and central nervous system disorders requiring diversion of CSF. The potential accumulation of this diverted fluid in and around meticulously approximated pelvic musculature so important to continence was a real concern and prompted immediate reexploration and shunt conversion. It is recommended that future cases with these coexisting abnormalities should be carefully considered for shunt conversion prior to or at the time of posterior sagittal anorectoplasty, particularly if the peritoneum is inadvertantly entered.