单项选择题
Distinguish
normal and abnormal pulmonary vascular patterns on the chest film.
These
four patients all have the same condition.What
is it?()
A.Normal
B.Ventricular
septal defect with normal pulmonary blood flow
C.Atrial
septal defect with increased pulmonary blood flow
D.Chronic
pulmonary emboli
E.Left
ventricular failure with pulmonary venous hypertension