Congenital Umbilical Hernia

Congenital umbilical hernia is a condition where a soft bulge appears near the baby's belly button due to a weakness in the abdominal wall. This happens because the muscles around the umbilicus do not close completely before birth. The hernia allows part of the intestine or abdominal tissue to push through, creating a noticeable lump. It primarily affects the digestive system and the abdominal wall. Most cases are painless and do not cause serious health problems. The size of the bulge can vary and may become more obvious when the baby cries or strains. This condition is common in newborns and often resolves on its own as the muscles strengthen.

Congenital umbilical hernia is defined as a protrusion of intra-abdominal contents through a persistent defect in the umbilical ring due to incomplete closure of the umbilical fascia during fetal development. The defect results from failure of the umbilical ring to close after the umbilical cord detaches, leading to a hernial sac covered by skin and subcutaneous tissue. It is most commonly seen in neonates and infants, with increased incidence in premature infants and those with conditions causing increased intra-abdominal pressure. The hernia sac typically contains omentum or small bowel loops. Clinically, it presents as a soft, reducible swelling at the umbilicus that enlarges with crying or straining. The major clinical significance lies in the rare risk of incarceration or strangulation, which requires prompt surgical intervention. Most cases spontaneously close by 1 to 2 years of age as the abdominal wall muscles strengthen.