Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are well - expanded and clear . No focal opacity . Pulmonary edema and vascular congestion have resolved . Trace left pleural effusion . Severe cardiomegaly is unchanged . Cardiomediastinal and hilar silhouettes are unremarkable . 3 pacemaker leads are unchanged in position .
    OUTPUT:
    
Trace left pleural effusion . Otherwise , no evidence of acute cardiopulmonary abnormality .