retroperitoneum

例句：

1. 1. The surgeon performed a laparoscopic procedure to remove the tumor from the patient's retroperitoneum.
   外科医生通过腹腔镜手术将肿瘤从患者的后腹膜中取出。
2. 2.During surgery, the surgeon had to reposition the patient's organs to avoid damaging the retroperitoneum.
   在手术过程中，外科医生需要重新定位患者的器官，以避免损伤后腹膜。
3. 3.The patient was taken to the operating room for further treatment after the retroperitoneum was identified as the source of the infection.
   在确定感染源自后腹膜之后，患者被送往手术室接受进一步治疗。