pericardial diverticulum

例句：

1. 1. A pericardial diverticulum can cause heart palpitations and chest pain.
   心包憩室可能导致心悸和胸痛。
2. 2. The patient was diagnosed with a pericardial diverticulum, which required surgery.
   患者被诊断出患有心包憩室，需要手术治疗。
3. 3. The doctor performed an echocardiogram to investigate the presence of a pericardial diverticulum in the patient's heart.
   医生进行了心脏超声检查，以探查患者心脏中是否存在心包憩室。