Wee Jee Wan, Lee Tae Hee, Lee Joon Seong, Kim Wan Jung
Institute for Digestive Research, Digestive Disease Center, Soonchunhyang University Hospital, Soonchunhyang University College of Medicine, Seoul, Korea.
Clin Endosc. 2013 Jul;46(4):410-3. doi: 10.5946/ce.2013.46.4.410. Epub 2013 Jul 31.
Superior mesenteric artery (SMA) syndrome is an uncommon disease that results from SMA compression of the third portion of the duodenum. Patients with SMA syndrome present with upper gastrointestinal symptoms, such as nausea, vomiting, and abdominal pain. The diagnosis is usually made from an upper barium study or computed tomography. Typically, SMA syndrome is caused by a decreased aortomesenteric angle of 6° to 25°. An underweight body mass index (BMI) is a risk factor for development of SMA syndrome. There are few reports of the role of linear endoscopic ultrasound (EUS) in the diagnosis of SMA syndrome. We report a case of SMA syndrome, with normal BMI, that was diagnosed with the aid of linear EUS. Although SMA syndrome is not typically within the scope of practice of endosonographers, it is useful to get familiar with the findings.
肠系膜上动脉（SMA）综合征是一种罕见疾病，由SMA对十二指肠第三部的压迫所致。SMA综合征患者会出现上消化道症状，如恶心、呕吐和腹痛。诊断通常通过上消化道钡餐检查或计算机断层扫描做出。典型情况下，SMA综合征由腹主动脉肠系膜夹角减小至6°至25°引起。体重指数（BMI）偏低是SMA综合征发生的一个危险因素。关于线性内镜超声（EUS）在SMA综合征诊断中的作用的报道很少。我们报告一例BMI正常的SMA综合征病例，该病例借助线性EUS得以诊断。尽管SMA综合征通常不在内镜超声检查医生的业务范围内，但熟悉相关表现是有用的。
