RESUMEN
<p><b>OBJECTIVE</b>To investigate the surgical outcomes after on transumbilical laparoscopic pull-through procedure for pediatric hypoganglionosis(HYP).</p><p><b>METHODS</b>Twelve children with HYP had received transumbilical laparoscopic pull-through procedure from June 2009 to June 2010. Specially designed curved and elongated laparoscopic instruments were used during the procedures. All the patients were followed up over 10 months. Data were collected and analyzed. The diagnosis of hypoganglionsis was pathologically confirmed.</p><p><b>RESULTS</b>No conversions to laparotomy or traditional laparoscopic surgery were required and there were no damages to the abdominal blood vessels, intestine, ductus deferens, or ureters. The average duration of operation was 140 min. The mean intraoperative blood loss was 45 ml. The mean length of specimen was 40 cm. Postoperatively there were no complications such as anastomotic leak, anastomotic stricture, constipation, seepage, or fecal in continence. The average hospital stay after surgery was 9 days. During 10 to 22 months of follow-up(median 16 months), no postoperative recurrence was noticed. No obvious scar was seen 1 months after surgery.</p><p><b>CONCLUSION</b>It is safe and effective for children with hypoganglionosis to undergo transumbilical laparoscopic pull-through procedure.</p>