DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Umbilical hernia. Close-up of a congenital umbilical hernia in the navel of a 45-year-old man. An umbilical hernia occurs when a loop of the intestines protrudes through a weak area in the abdominal wall behind the navel. Congenital hernias are present from birth. Surgical repair is needed if the hernia is large or disfiguring.
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