Anterior sagittal anorectoplasty as a technique for the repair of female anorectal malformations: A twenty two-years-single-center experience

Abstract

BackgroundAnorectal malformations (ARMs) are major congenital malformations occurring in female children in approximately 1 out of every 4000–5000 births. Posterior sagittal anorectoplasty (PSARP) was introduced for their treatment in early 1980s by Pena and Devries. However, anterior sagittal anorectoplasty (ASARP) was first introduced by Okada as a modification of the previous technique. PurposeThe aim of this study was to report our experience and the long-term follow-up results of 594 female patients with anorectal malformations treated by anterior sagittal anorectoplasty (ASARP) in a single center over 22 years. We chose this approach as the incision is smaller, with minimal cutting of the external sphincter and easier dissection of the vagina and rectum.The type of our study was retrospective study. ResultsThe study included 594 patients; 342 of them were less than 1 year old. About 526 patients had rectovestibular fistula, anterior perineal anus in 55 patients, anocutaneous fistula in 6 patients and rectovaginal fistula in 7 patients. All of these patients had been subjected to ASARP technique which had been done in one stage without proceeding colostomy in about 470 cases and in staged fashion with a protective colostomy in 124 patients. Postoperative follow up revealed that four patients (0.7%) developed anal retraction, 30 patients (5%) developed anal stricture, 20 patients (3.4%) had rectal prolapse and 40 patients (6.7%) developed anterior anal migration. Constipation was observed in 161 patients (27%) by the end of 1st postoperative year reduced to 41 patients (7%) after one year. 474 patients were assessed for continence by Kelly's continence score and 453 patients showed good result, 16 patients showed fair result and about 5 patients had poor continence outcome. ConclusionAnterior sagittal anorectoplasty is a procedure with optimal functional outcome especially at if done at an early age in one stage without preliminary colostomy.