Median arcuate ligament syndrome during pancreaticoduodenectomy.

Median arcuate ligament syndrome is caused by the compression of the celiac artery by a fibrous band called the median ligament, which originates from the crus of diaphragm. The prevalence of Median arcuate ligament syndrome has been reported as 10%-24% among patients; however, the etiology is unclear. The components of the clinical triad include a chronic post-prandial pain, epigastric murmur, and weight loss. Diagnosis is based on clinical and radiological findings. Median arcuate ligament syndrome has been reported in a small portion of patients undergoing pancreaticoduodenectomy. Most patients have been diagnosed prior to surgery.