title: The pseudotransition zone in long segment Hirschsprung's disease.
abstract: Two cases of Hirschsprung's disease with psuedotransition zones are presented. The location and appearance of the transition zone, transverse contractions proximal to the radiographic transition zone, and a delayed film aid in distinguishing a false transition zone from a true transition zone.
mesh_terms: D001706:Biopsy; D003125:Colostomy; D005260:Female; D006801:Humans; D007081:Ileostomy; D007223:Infant; D007231:Infant, Newborn; D007813:Laparotomy; D008531:Megacolon / Q000000981:diagnostic imaging* / Q000601:surgery; D011859:Radiography