患者男，４５岁，劳累性心悸气促两个多月入院，入院时ＥＣＧ检查示肢体导联低电压，Ⅰ度房室传导阻滞。Ｘ线示心影增大，纵隔增宽，心胸比率０．５８。超声检查左室４７ｍｍ，左房１２ｍｍ，左房后壁心包腔实质性肿物呈椭圆形，大小９ｃｍ×８ｃｍ×７ｃｍ，质地尚均匀，... The patient male, 45 years old, had exhausted heart palpitations and shortness of breath and was admitted to the hospital for more than two months. At the time of admission, the ECG showed low voltage in the limb leads and I degree atrioventricular block. The X-ray shows that the heart shadow increases, the mediastinum widens, and the cardiothoracic ratio is 0.58. Ultrasound examination of the left ventricle 47mm, left atrial 12mm, left atrium posterior pericardial cavity solid mass was oval, size 9cm × 8cm × 7cm, texture is still uniform, ...