pyelonephrosis

例句：

1. 1. Pyelonephrosis is a common cause of kidney infection in children.
   肾盂肾炎是儿童肾脏感染的常见原因。
2. 2. The patient was diagnosed with pyelonephrosis and required antibiotic treatment.
   患者被诊断为肾盂肾炎，需要抗生素治疗。
3. 3.Symptoms of pyelonephrosis include fever, chills, and pain in the lower abdomen.
   肾盂肾炎的症状包括发热、寒战和下腹部疼痛。