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.
Caused by compression of distended duodenum
Common in young females
Does not occur in obese individuals
Most common in 6th - 7th decade