perimyocarditis

例句：

1. 1. He developed perimyocarditis after a long illness.
   他在长期生病后发展成了心肌炎。
2. 2. The patient was diagnosed with perimyocarditis and required immediate treatment.
   患者被诊断出患有心肌炎，需要立即治疗。
3. 3. Perimyocarditis is a serious condition that can lead to heart failure if left untreated.
   心肌炎是一种严重的状况，如果不治疗可能会导致心脏衰竭。