Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are normal . There is no focal consolidation , effusion , or pneumothorax . There is no central vascular congestion or overt pulmonary edema . Mediastinal and hilar contours are normal . There is mild cardiomegaly , predominantly due to an enlarged left ventricle , which is consistent with prior VSD , though could reflect a small pericardial effusion .
    OUTPUT:
    
Mild cardiomegaly , predominantly left ventricular enlargement , consistent with patient 's known VSD , though pericardial effusion can not be definitively excluded . Recommend correlation with physical exam and EKG findings . If there is persistent clinical concern , echocardiography could be considered for further evaluation .