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左房粘液瘤常误诊为风湿性二尖瓣病变。为探讨左房粘液瘤的Ｘ线特征，作者分析了１０例手术病理证实的左房粘液瘤Ｘ线平片表现，并与同期手术病理证实的１３例风湿性二尖瓣狭窄的Ｘ线平片表现进行对照研究。结果表明左房粘液瘤具有下列Ｘ线相对特征：①一般无左心耳增大或仅轻微增大，不出现重度左心耳增大表现，②左房体部多为轻至中度增大，一般不见心底部双重影及右心缘双弧影；③一般不出现肺间隔线和肺间质纤维增生。若瘤体嵌入二尖瓣环引起血流突发阻塞时则可见左房增大轻微与重度肺瘀血之不相称表现。④一般心胸比值不大于０．６０。本文还结合文献对左房粘液瘤时左室增大的机理及Ｘ线平片对左房粘液瘤的诊断价值等进行了讨论。
Left atrial myxoma is often misdiagnosed as rheumatic mitral valve disease. To investigate the X-ray features of left atrial myxoma, the author analyzed 10 cases of left atrial myxoma X-ray plain film proved by pathology, and compared with 13 cases of rheumatic mitral stenosis confirmed by the same period pathology X-ray film Performance control studies. The results show that the left atrial myxoma has the following X-ray relative characteristics: 1 generally no increase of the left atrial appendage or only a slight increase, no severe performance of the left atrial appendage, 2 left atrial body mostly mild to moderate increase, generally Do not see the heart at the bottom of the double shadow and right heart edge double arc shadow; 3 generally does not appear in the lung interstitium and pulmonary interstitial fibrosis. If the tumor is embedded in the mitral annulus causing sudden blood flow obstruction, the discordant performance of left atrial enlargement and severe pulmonary hemorrhage can be seen. 4 The general cardiothoracic ratio is not greater than 0.60. This article also discusses the mechanism of left ventricular enlargement during left atrial myxoma and the diagnostic value of X-ray film for left atrial myxoma.