Nearly 15 % of all patients operated with TAPT for HD continue to experience persistent bowel symptoms with constipation as the main problem. Further studies on the long-term outcome of children operated with this technique for HD are necessary to evaluate stooling patterns, urinary and sexual function as well as general quality of life during adolescence and adulthood.
The association with the RET gene and HD is well recognized. This study showed a clear association between RET+ mutations and the long-segment, total colonic- and total intestinal aganglionosis. Exon 13 appears to be a mutational "hot spot" in rectosigmoid disease.
This meta-analysis shows that nearly one-third of the patients continue to have long-term bowel problems, such as constipation, soiling and recurrent enterocolitis following LAPT. Many patients treated by LAPT require secondary surgery. Large randomized studies with long-term follow-up are necessary to determine the difference in outcome between LAPT and completely transanal pull-through operation.
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