Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated without focal opacities . The cardiomediastinal contour is unremarkable . Blunting of the right costophrenic angle is unchanged from prior study and shown to be due to a prominent epicardial fat pad . There is no pleural effusion or pneumothorax . Degenerative changes of the bilateral AC joints are observed .
    OUTPUT:
    
No evidence of pulmonary vascular congestion or any acute cardiopulmonary process .