Sacroperineal anorectoplasty using intraoperative ultrasonography: evaluation by computed tomography.

A new operative technique that uses ultrasonography during sacroperineal or sacroabdominoperineal anorectoplasty was performed on seven patients with an intermediate or high anorectal malformation. Ultrasonography was used for the purpose of making a pull-through tunnel under visual guidance. The results of this technique were evaluated by computed tomography scanning to find the anatomic position of the pulled-through rectum in relation to the anal sphincter muscle. Postoperative computed tomography scans showed that the rectum was correctly placed in the center of the sphincter muscle in all patients.