pericardial concretion

例句：

1. 1.He was diagnosed with pericardial concretion, which required immediate surgery.
   他被诊断出患有心包结石，需要立即手术。
2. 2. The patient's condition worsened after the pericardial concretion was removed.
   患者的症状在心包结石被移除后恶化了。
3. 3.The doctor explained that pericardial concretion can lead to heart failure if not treated promptly.
   医生解释说，如果不及时治疗，心包结石可能导致心脏病发作。