Celiac artery compression syndrome on CT and aortography

A sagittal reconstruction of a CT scan (A) shows compression of the origin of the celiac axis (arrow). An axial image of the abdomen (B) shows the extremely narrowed celiac axis posterior to the median arcuate ligament. The median arcuate ligament is formed by the fusion of the two crura. Image C is a magnified view of B, and shows the right and left crura (arrowheads) behind which lies the compressed artery (arrow). Image D is a lateral projection of an aortogram and shows a stenosis of the celiac axis on its superior aspect caused by the median arcuate ligament.