试题与答案

左心房扩大的早期X线征象是() A.后前位右心下段双边或双房影 B.后前位左心缘第3

题型:单项选择题

题目:

左心房扩大的早期X线征象是()

A.后前位右心下段双边或双房影

B.后前位左心缘第3弓突出

C.左前斜位左主支气管受压抬高

D.左前斜位心后缘向后下膨隆突出

E.右前斜位食管压迹加深

答案:

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