Failure to pass meconium within 48 hrs of birth in a newborn with no obvious external abnormality should lead to the suspicion of –
Read what Nelson says about Hirschsprung's disease (Congenital aganglionosis).
"Ninety-nine per cent of full-term infants pass meconium within 48hrs of birth. Hirschsprung disease should be suspected in any fill term infant with delayed passage of stool".
Anal atresia
Congenital pouch colon
Congenital aganglinosis
Meconium ileus