Haddad syndrome presenting with abdominal distension associated with long-segment aganglionosis

Haddad syndrome is a form of neurocristopathy characterized by a combination of congenital central hypoventilation syndrome and Hirschsprung disease (HD). Although Haddad syndrome is extremely rare, awareness of the combination of long-segment HD in Haddad syndrome as well as radiographic manifestations may help to ensure a timely diagnosis as well as to facilitate optimal treatment of this unusual condition. We report a case of Haddad syndrome with long-segment, intestinal aganglionosis in a newborn infant. This report emphasizes the features of HD in children with Haddad syndrome and suggests that specific attention be given to its interpretation on plain radiographs. (C) 2012 Elsevier Inc. All rights reserved.