The wing is a flattened evagination of the dorsal body wall.

翅是昆虫背板的片状翻出物。

Methods:Echocardiography demonstrated saccular evagination of the ventricular wall in 3 patients. All patients underwent coronary angiography and ventriculography.

方法：超声心动图诊断的先天性心脏憩室3例，冠状动脉造影正常。