Paraduodenal hernia is a rare congenital anomaly caused by abnormal rotation
of the midgut in embryonic stage, with part of the small intestine becoming
trapped posterior to the mesocolon. Right and left paraduodenal hernias are
distinct and separate entities, varying not only in anatomical structure but
also in embryological origin. Paraduodenal hernia is a rare cause of acute
intestinal obstruction. Careful clinical evaluation is needed for prompt
surgical treatment. Because it is difficult to diagnose before exploration,
and since paraduodenal hernia may cause potentially lethal complications
such as obstruction, gangrene or bowel perforation, the possibility of
internal hernia should be considered in any patient with acute intestinal
obstruction who has no previous abdominal operation or external hernia. If
paraduodenal hernia is suspected to be the cause of acute intestinal
obstruction, the recommended tool for diagnosis is abdominal computed
tomography. We experienced three cases of paraduodenal hernia, one case was
right paraduodenal hernia while the others were left paraduodenal hernia.
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