The enterocolitis following a pull-through in Hirschsprung's disease can be life-threatening and difficult to distinguish clinically from gastroenteritis and post-operative complications. We reviewed retrospectively the abdominal radiographs in our series to identify specific radiographic characteristics of this syndrome in this population. A total of 55 episodes of enterocolitis with an abdominal series at presentation were located in the files of 43 patients following pull-through surgery for Hirschsprung's disease. There were 15 abdominal series with other complications of Hirschsprung's disease and surgery (seven cases of small bowel obstruction, one of fistula, one of abscess, six of severe constipation) and 71 surveillance follow-up studies. Radiographs were evaluated for bowel dilatation, air-fluid levels, intestinal cut-off sign, speculation, and pneumatosis. The intestinal cut-off sign with two or more air-fluid levels had sensitivity of 68% and specificity of 83%, with a positive predictive value of 0.71 and overall accuracy of 77%. Our review of enterocolitis following pull-through in children with Hirschsprung's disease concludes that the constellation of an intestinal cut-off sign and at least two air-fluid levels on the abdominal series strongly suggests the diagnosis.