Neonatal umbilical hernia

An umbilical hernia is a hernia formed when abdominal contents protrude through the umbilical ring. It is one of the most common diseases in neonates and infants, and can also occur in adults. Neonatal umbilical hernia is a congenital developmental defect, more common in premature and low-birth-weight infants. This condition presents as a protruding mass in the umbilical region of the neonate. The umbilical bulge increases in size when the infant cries or defecates, and may spontaneously disappear when the infant is quiet, lying flat, or sleeping.