What is the reason for the bump on a child's navel?

Patient's question:

Basic Information: Female, 2 months
Disease/Symptoms: Navel Swelling
Description of Condition: The baby has had a lump at the navel for over fifty days, and it has been getting bigger. At first, it would subside without crying, but now it remains swollen.

Doctor's answer:

Hello. Your baby should have the umbilical cord. Because the skin of the umbilical cord is very fragile. It is recommended to go to the hospital to see if surgery or bandaging is needed. According to what you said, this may be an umbilical hernia. This is because abdominal organs pass through the umbilical cord. It is more common in infants and young children. The crying is very obvious. It needs active examination. Avoid constipation and crying. It should be an umbilical hernia. If there is no discomfort or strangulation, then no special treatment is needed.