RESUMO
BACKGROUND/PURPOSE: Fifteen consecutive children aged 20 days to 12 years with biopsy-proven Hirschsprung's Disease (HD) underwent a transanal pull-through procedure over a 17-month period. These patients have been divided into 2 groups. The first was a series of 9 patients, which helped us gain familiarity and confidence with technical and postoperative gestational problems, and the second series was of 6 patients, which fully corroborates and adds further evidence on the minimally invasive nature of the technique. Mucosectomy of aganglionic bowel, access to the peritoneal cavity, division of rectosigmoid mesenteric vessels, pull-through of normoganglionic colon, colectomy, and coloanal anastomosis all were performed transanally. Patients underwent a program of progressive anal dilatations and were assessed for postoperative clinical course, continence, constipation, diarrhea, postoperative enterocolitis, perianal excoriations, and anal stricture. RESULTS: Mucosectomy was done under direct vision. Operating time ranged from 150 to 350 minutes. The average length of bowel resected was 13.5 cm with a range of 8 cm to 25 cm. There were neither intraoperative nor significant postoperative complications. All but 2 patients accepted full oral feedings on postoperative day 2. Mean hospital stay in the first series of 9 patients was 7 days, range, 5 to 12 days; that of the second series of 6 patients was 5 days, range, 4 to 8 days. All children currently experience 1 to 6 bowel movements per day at a follow-up period of 1 to 17 months. CONCLUSIONS: A one-stage pull-through procedure for HD can be performed successfully with a completely transanal approach. This technique is associated with excellent early clinical results. Many more cases and a longer follow-up period will be required to compare long-term results with other one-stage procedures for definitive treatment of HD.
