Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is moderately enlarged , but the cardiac silhouette is obscured due to the presence of a moderate - to - large right pleural effusion with right basilar compressive atelectasis . Mild pulmonary edema appears relatively unchanged compared to prior study . No left - sided pleural effusion is visualized . There is no acute osseous abnormality .
    OUTPUT:
    
Moderate - to - large right pleural effusion , slightly increased from prior , with right basilar atelectasis . Mild pulmonary edema , unchanged .