Paraduodenal hernias are a type of internal hernia whereby an abdominal organ passes through a defect into another compartment within the abdominal cavity.
These hernias are congenital and arise from anomalous rotation and fusion of mesentery and parietal peritoneum during embryogenesis.
There are two types of paraduodenal hernia: the left paraduodenal hernia and the right paraduodenal hernia.
Left paraduodenal hernias are three times more common than right paraduodenal hernias.
Paraduodenal hernias may not cause symptoms and may be discovered incidentally, though bowel incarceration and strangulation can occur.