All are true regarding superior Mesenteric Artery Syndrome, except -

• Vascular compression of third portion of the duodenum by the superior mesenteric artery as it passes over this portion of the duodenum. • Also known as Wilkie’s syndrome, cast syndrome, and arteriomesenteric duodenal ileus or compression. • An abnormally narrow, aortomesenteric angle.. • An abnormally highly fixed transverse duodenum. • An abnormal course of the mesenteric artery continuing inferiorly, anterior to the unyielding vertebral column. • Most commonly seen in young asthenic individuals, with women being more commonly affected than men. • SMA normally leaves aorta at an acute angle (50 - 60°). • Normally a mass of fat and lymphatics near origin of SMA is believed to protect duodenum from compression.