女，３６岁，因腰背部疼痛不适住院，３日后患者出现腹胀不适。次日呕吐一次，为咖啡色样胃内容物。查体于剑突下可扪及肿物。Ｂ超检查，胃饮水充盈后发现大量胃内容物潴留，胃液逆流明显，排空受阻。于近胆囊内下方的胃幽门窦部前壁显示７．２ｃｍ×１．６ｃｍ低回声区，... Female, 36 years old, was hospitalized because of low back pain and she developed bloating discomfort three days later. The next day vomited once for brown color stomach contents. Check the body under the xiphoid palpable masses. The B-ultrasound showed that after filling of the stomach drinking water, a large amount of gastric contents was found to be retained, and the gastric juice was significantly countercurrent, and the emptying was blocked. In the lower part of the gallbladder, the front wall of the pyloric antrum shows a low echo area of ​​7.2cm × 1.6cm,...