Hirschsprung Disease and Hypoganglionosis in Adults: Radiologic Findings and Differentiation

Abstract

A markedly dilated proximal colonic segment with a transition zone and a narrowed distal colonic segment on CT and double-contrast barium enema images in conjunction with chronic refractory constipation in an adult should suggest the diagnosis of adult HD or adult HG. The detection of a much higher transition zone ratio may help to establish the diagnosis of HD.