Final answer:
An umbilical hernia is associated with congenital hypothyroidism, which is characterized by a large tongue and other physical abnormalities. In most cases, an umbilical hernia resolves on its own by the age of 2 or 3 and does not require surgical repair.
Step-by-step explanation:
An umbilical hernia is a condition in which part of the intestine protrudes through the abdominal muscles near the belly button. It is commonly associated with congenital hypothyroidism, a condition in which the thyroid gland does not produce enough thyroid hormones. This association is primarily based on the fact that both conditions can be present in newborns. In addition, another common feature of congenital hypothyroidism is a large tongue.
In most cases, an umbilical hernia does not require surgical repair and typically resolves on its own by the age of 2 or 3. However, if the hernia persists beyond this age or causes complications, such as incarceration or obstruction of the intestines, surgical intervention may be necessary.