Segmental aganglionosis in Hirschsprung's disease in newborns - a case report.

Segmental aganglionosis Hirschsprung's is an extremely rare condition. Described as a segment of normally ganglionated bowel surrounded proximally and distally by aganglionosis, zonal aganglionosis is of interest because it may cause confusion in interpreting surgical margins. Diagnosis of segmental lesions in Hirschsprung's disease may be missed as it is rarely suspected at initial surgery.