Abstract
Introduction and importance: Paraduodenal hernias (PDHs) are congenital internal hernias. Overall, internal hernias are between 0.2 % and 0.9 %, while 53 % of these statistics are for PDH. There are left and right types of PDHs. CASE PRESENTATION: An otherwise healthy 26-year-old man was presented with a sudden-onset epigastric and right upper quadrant abdominal pain. Abdominopelvic double contrasted CT scan revealed multiple dilated proximal-mid small bowel loops in the portal venous phase consistent with small bowel obstruction, suggesting concomitant bowel malrotation with internal paraduodenal hernia. The patient with the pre-operative diagnosis of small bowel obstruction due to volvulus was scheduled for emergency surgery. He was four weeks complication-free in his regular follow-up. CLINICAL DISCUSSION: In 1857, Treitz first described PDH as a phenomenon when the primitive midgut in embryonic life abnormally rotates and causes mesocolic hernia. The location of the duodenal recess is the origin point for describing the hernia; thus, the jejunum is the most common herniating viscus. However, the stomach, small intestine, and sometimes the colon usually consist of the contents of the hernia. CONCLUSION: In the absence of surgical history, abdominal wall hernia, and intra-abdominal inflammatory disease, in case of repeated abdominal pain or intestinal obstruction, and if no other causes are found, the possibility of a PDH should be kept in mind.