What is the appropriate aganglionic bowel length on contrast enema for attempting single stage transanal endorectal pull-through in Hirschsprung disease?

This correspondence discusses optimal aganglionic bowel length criteria for selecting patients with Hirschsprung disease suitable for single-stage transanal endorectal pull-through based on contrast enema findings. The piece responds to published research on surgical approach selection in this congenital colorectal condition.