To assess the clinical value of duodenal circular drainage operation to treat superior mesenteric artery syndrome(SMAS). Methods Forty two cases of SMAS were treated with duodenal circular drainage operation from 1959 to 2001. Clinical data were analyzed retrospectively. Results In this group,37 cases were treated with duodenal circular drainage operation,and had good effect after follow- up of 1~15 years,the other 5 cases were first treated with anterior repositioning of the duodenum (1 case),gastrojejunostomy (1 case) ,duodeojejunostomy (2 cases) .subtotal gastrectomy and Billroth Ⅱ gastrqjejunostomy( 1 case), but vomiting was not relieved until duodenal circular drainage operation was performed again. Follow-up of 9~10 years revealed good effect. Conclusion In SMAS, if the reversed peristalsis is stronger and continuous,and vomiting appears frequently, the symptom can not be relieved even if the obstruction of duodenum is removed by operation. The key treatment is the relief of reversed peristalsis. Only the duodenal circular drainage operation could resolve the drainage direction of duodenal content and relieve the symptom of vomiting. 相似文献