[Paraduodenal hernia: an unusual cause of intestinal obstruction]

Paraduodenal hernia. The paraduodenal hernia is the most common type of intraabdominal hernia. There exists a right and left variety, both of them with their own specific pathogenesis. The clinical manifestations range from intermittent and mild digestive problems to acute intestinal obstruction. An exact preoperative diagnosis is seldom made. The knowledge of their pathogenesis and the anatomical characteristics is very important for a successful surgical treatment.