Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . There is persistent blunting of the right lateral costophrenic angle and trace blunting seen posteriorly . This may be due to small pleural effusion with possible underlying pleural thickening or scar laterally . Faint right basilar opacities have not significantly changed since prior and may be due to scar . There is no pulmonary vascular congestion . Cardiac silhouette is enlarged likely in part due to pericardial effusion . No acute osseous abnormalities detected .
    OUTPUT:
    
No evidence of pulmonary edema . Persistent probable small right pleural effusion and possible pleural - based scarring . Unchanged enlargement of the cardiac silhouette likely in part due to the patient 's known pericardial effusion .