pyelonephritis

例句：

1. 1. He developed a kidney infection after hissurgery.
   他在手术后患上了肾盂肾炎。
2. 2. Thepatient was diagnosed with pyelonephritis and required antibiotic treatment.
   患者被诊断出患有肾盂肾炎，需要抗生素治疗。
3. 3. Pyelonephritis isa serious condition that can lead to kidneydamage if left untreated.
   肾盂肾炎是一种严重的状况，如果不及时治疗，可能会导致肾脏损伤。