患者，男，53岁，因反复恶心、呕吐3个月，曾行胃镜检查示返流性胃炎，经抗炎治疗无效来诊。有糖尿病史2年余。查体：消瘦，浅表淋巴结未及肿大，腹软、无压痛，未及明显包块。B超示：左上腹脾门前下方胰体尾前可探及约11cm×13cm大小低回声四块，边清，不规则，内可见无回声暗 The patient, male, 53 years old, who had repeated nausea and vomiting for 3 months, had undergone gastroscopy for reflux gastritis and had been treated with anti-inflammatory treatment. Have a history of diabetes for more than 2 years. Physical examination: weight loss, superficial lymph node enlargement, abdominal softness, no tenderness, and no obvious mass. B-show: left upper abdomen before the spleen in front of the pancreatic body can probe and about 11cm × 13cm size low echo four, edge clear, irregular, there is no echo within the dark