患者男，２６岁。２年前无明显诱因出现胸闷气短，劳累后加重，休息后可缓解。１周前症状加重伴呼吸困难。心脏彩超示：右房及右室流出道肿物８．８ｃｍ×６．８ｃｍ。于１９９７年７月２２日以心房粘液瘤收入院。查体：心前区无隆起。心浊音界向右扩大。心律８６次／分，... Male patient, 26 years old. Two years ago, there was no obvious incentive for chest tightness, shortness of breath, and aggravation after exertion, which could be relieved after the break. Symptoms worsened with difficulty breathing 1 week ago. The color of the heart showed: right atrium and right ventricular outflow tract mass 8.8cm x 6.8cm. On July 22, 1997, he received an atrial myxoma hospital. Physical examination: No bulge in the precordial area. The voiced voice circle expands to the right. Heart rate 86 beats/min,...