Lappe D L, Bulkley B H, Weiss J L
Chest. 1978 Jul;74(1):55-8. doi: 10.1378/chest.74.1.55.
Two patients with left atrial myxomas detected with one-dimensional echocardiographic studies were evaluated before and after surgery with real-time phased-array two-dimensional echocardiographic studies. This latter technique provided relatively quantitative information regarding the size, shape, and mobility of the tumor and its effect on cardiac function. In case 1, the two-dimensional echocardiogram showed a relatively immobile tumor measuring 3 x 4.5 cm in diameter in the left atrium only. At surgery a 2 x 4.5-cm myxoma that was attached to the left atrium by a broad-based short stalk was removed. In case 2, the left atrial mass appeared to be 3 x 4 cm in diameter, with much movement during the cardiac cycle. At surgery a 3 x 4-cm left atrial myxoma that was attached to the interatrial septum by a long stalk was removed. In both cases, masses in other cardiac chambers were excluded, the mitral valves were normal, and left ventricular function was normal, all of which were confirmed at surgery and by postoperative echocardiograms. In one patient the information obtained by two-dimensional echocardiographic studies was believed to be sufficient to preempt the need for cardiac catheterization. These cases illutstrate that this new noninvasive technique may provide sufficient quantitative preoperative detail in patients with left atrial tumors to obivate the risk and expense of caridac catheterization.
两名通过一维超声心动图检查发现患有左心房黏液瘤的患者，在手术前后接受了实时相控阵二维超声心动图检查评估。后一种技术提供了有关肿瘤大小、形状和活动度及其对心脏功能影响的相对定量信息。在病例1中，二维超声心动图显示仅在左心房有一个直径为3×4.5厘米、相对固定的肿瘤。手术中切除了一个通过宽基底短蒂附着于左心房的2×4.5厘米黏液瘤。在病例2中，左心房肿块直径似乎为3×4厘米，在心动周期中有明显活动。手术中切除了一个通过长蒂附着于房间隔的3×4厘米左心房黏液瘤。在这两个病例中，均排除了其他心腔肿块，二尖瓣正常，左心室功能正常，所有这些在手术中和术后超声心动图检查中均得到证实。在一名患者中，二维超声心动图检查获得的信息被认为足以避免进行心导管检查。这些病例表明，这种新的非侵入性技术可能为左心房肿瘤患者提供足够的术前定量细节，从而避免心导管检查的风险和费用。
