肺栓塞是内源性或外源性栓子堵塞肺动脉或其分支导致肺循环障碍的临床病理生理综合征。是发病率、病死率及误诊率较高的常见病,由于临床医师对肺栓塞认识不足,极易误诊、漏诊,现将本院近来收治的首诊误诊为冠心病、不稳定型心绞痛的一例肺栓塞患者报告如下。病例资料患者,男,65岁,因“胸痛伴胸闷、气促,双下肢浮肿5月”入院。患者于5月前,无明显诱因开始出现胸痛,为心前区胀痛, Pulmonary embolism is a clinical pathophysiological syndrome where endogenous or exogenous emboli clog the pulmonary artery or its branches lead to pulmonary circulatory disorders. Is a common morbidity, mortality and misdiagnosis rate is high, because clinicians lack of knowledge of pulmonary embolism, easily misdiagnosed, missed diagnosis, now the first hospital treated recently misdiagnosed as coronary heart disease, a case of unstable angina Patients with pulmonary embolism are reported below. Case information patients, male, 65 years old, due to "chest pain with chest tightness, shortness of breath, edema of both lower extremities admitted to hospital. Patients before May, no obvious incentive to start chest pain, heart area before the pain,