A 62-year-old male without significant medical history presented with intermittent epigastric pain and abdominal fullness for 2 months. He denied having bloody stool or weight loss. He visited the outpatient department, where the CT scan of abdomen was performed (figure 1). He then underwent oesophagogastroduodenoscopy (EGD), which revealed a subepithelial tumour at gastric antrum with obstruction of the pylorus (figure 2 and video in the online supplementary file 1). Endoscopic ultrasound sonography (EUS) was performed …

中文翻译：

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一种异常胃肿瘤伴胃出口梗阻

一名 62 岁男性，无明显病史，表现为间歇性上腹痛和腹部饱胀 2 个月。他否认有血便或体重减轻。他去了门诊部，在那里进行了腹部 CT 扫描（图 1）。然后他接受了食管胃十二指肠镜检查 (EGD)，结果显示胃窦上皮下肿瘤伴幽门梗阻（图 2 和在线补充文件 1 中的视频）。进行了内窥镜超声检查（EUS）……