0　引言　心脏肿瘤仅有 5 %～ 10 %被临床诊断 [1 ] .心脏磁共振成像检查可清楚区分不同部位肿瘤 .肿瘤累及心房壁、心室壁等部位 ,可致不同的心律失常、心衰发生 .1　临床资料　患者 ,女性 ,5 7岁 ,因上楼或爬坡后心慌、气短3wk,休息后可缓解 ,间断双下肢浮肿 ;心电图提示 :左 0 Introduction Only 5% to 10% of cardiac tumors are clinically diagnosed [1]. Cardiac magnetic resonance imaging can clearly distinguish tumors at different sites. Tumor involving the atrial wall, ventricular wall and other parts, can cause different arrhythmias, heart failure .1 Clinical data, female, 5-7 years old, because of palpitation or shortness of breath after going upstairs or climbing 3wk, can be relieved after rest, intermittent edema of both lower extremities; electrocardiogram prompts: left