患者女,36岁。因右上腹微痛就诊。超声检查见右上腹部右肾前方、胆囊左后方、胰头右侧有一约1.5cm×2.2cm的低回声团,边界清晰,内部回声均质,彩色多普勒显示内部血流信号丰富(图1)。饮水使十二指肠充盈后,再行超声检查,见肿块位于十二指肠左侧,与十二指肠腔关系密切,随十二指肠 Female patient, 36 years old. Due to slight pain in the right upper quadrant. Ultrasonography showed a hypoechoic mass of about 1.5cm x 2.2cm in front of the right kidney in the right upper abdomen, left posterior of the gallbladder, and right side of the pancreas. The boundary was clear, the internal echo was homogeneous, and color Doppler showed a rich internal blood flow signal (Figure 1). ). After drinking water to fill the duodenum, then ultrasound examination, see the tumor is located on the left side of the duodenum, and close to the duodenal cavity, with the duodenum