Abstract
Hirschsprung disease (HD) is an obstructive colonic process usually diagnosed in the neonatal period. A small subset of cases are diagnosed late, present with severe constipation without enterocolitis and have low rectosigmoid disease. A transanal-only pull-through is a well-described approach but in the newborn period risks a situation whereby the transition zone is higher than the sigmoid. We present our experience with the unique patient population of older HD patients in whom the transition zone was reliably reachable via a single-stage transanal approach, performed in prone position. Patients between 2 and 6 years of age with a rectal or sigmoid transition zone and minimal proximal colonic dilation can undergo a primary transanal pull-through surgical approach.