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Superior mesenteric arterial compression syndrome, also known as Wilke syndrome and duodenal stasis, is rare and occurs more often in elongated people, and more women than men
The prominent feature of this disease is that the symptoms are related to the position, which is aggravated by backward compression in the supine position, and can alleviate
Intestinal x-ray: there are many abnormalities in the remission period, signs of duodenal compression can be seen during the onset period, longitudinal knife-like blockade or waterfall-like fall at the center of the third segment (horizontal end), barium slowly passed, can stay in the duodenum for more than 6 hours, proximal end of the intestinal canal dilation, associated with postural changes, 20% may be accompanied by gastric dilation
Typical features of sonogram are: the angle between the abdominal aorta and the superior mesenteric artery becomes smaller, and the general < 20° (the angle between the normal human abdominal aorta and the superior mesenteric artery is 40° to 60°).
Secondary changes in vascular compression are shown: gastric duodenal dilation, frequent peristalsis and reverse peristalsis seen in the duodenum, and duodenal stasis can also be caused by other causes (such as intra-abdominal mesenteric adhesions