Imaging of total colonic Hirschsprung disease.

Abstract:

BACKGROUND:Hirschsprung disease (HD) is a functional obstruction of the bowel caused by the absence of intrinsic enteric ganglion cells. The diagnosis of total colonic HD (TCHD) based on contrast enemas is difficult in newborns because radiological findings vary. OBJECTIVE:To evaluate the radiographic and contrast enema findings in patients with pathologically proven TCHD. MATERIALS AND METHODS:From 1966 to 2007, 17 records from a total of 31 patients with TCHD were retrospectively evaluated for diameter and shape of the colon, diameter of the small bowel, bowel wall contour, ileal reflux, abdominal calcifications, pneumoperitoneum, filling defects, transitional zones and rectosigmoid index. RESULTS:Three colonic patterns of TCHD were found: microcolon, question-mark-shape colon and normal caliber colon. Additional findings included spasmodic colon, ileal reflux, delayed evacuation and abdominal calcifications. Colonic transitional zones were found in eight patients with TCHD. CONCLUSION:The diagnosis of TCHD is difficult to establish by contrast enema studies. The length of the aganglionic small bowel and the age of the patient can influence the radiological findings in TCHD. The transitional zone and the rectosigmoid index can be false-positive in TCHD. The colon can appear normal. Consider TCHD if the contrast enema study is normal but the patient remains symptomatic and other causes of distal bowel obstruction have been excluded.

journal_name

Pediatr Radiol

journal_title

Pediatric radiology

authors

Stranzinger E,DiPietro MA,Teitelbaum DH,Strouse PJ

doi

10.1007/s00247-008-0952-4

subject

Has Abstract

pub_date

2008-11-01 00:00:00

pages

1162-70

issue

11

eissn

0301-0449

issn

1432-1998

journal_volume

38

pub_type

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