retroperitoneal infection

例句：

1. 1. The patient was diagnosed with aretroperitoneal infection and requiredimmediate treatment.
   患者被诊断出患有腹膜后感染，需要立即治疗。
2. 2. The doctoradvised the patient to seek medical attention immediatelyfor a possible retroperitonealinfection.
   医生建议患者立即就医，可能是腹膜后感染。
3. 3. After undergoing surgery,the patient developed a retroperitoneal infection that required intensive care.
   手术后，患者出现了腹膜后感染，需要重症监护。