病例女，57岁，平素体健。1999年10月因体检发现“左上腹包块”住院。B超显示：胰体正常。胰尾部探及7.5cm×5.0cm×4.2cm弱回声不均质团块，内见多个大小不等的液性暗区，最大者1.2cm×1.4cm。肿块轮廓清晰，包膜完整。肝、胆、脾、肾及腹腔淋巴结未见异常。B超诊断：胰腺混合 Case female, 57 years old, usually healthy. In October 1999, he was hospitalized because of his physical examination. B-show: normal pancreatic body. The tail pancreas probed into a 7.5cm×5.0cm×4.2cm weakly echoed heterogeneous mass, and a number of liquid dark areas ranging from 1.2cm×1.4cm were seen. The mass is clear and the capsule is complete. No abnormalities were found in the liver, gall bladder, spleen, kidney, and abdominal lymph nodes. B-diagnosis: pancreas mixing