Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is marked enlargement of the cardiac contour , concerning for pericardial effusion or marked cardiomegaly . There is no mediastinal venous engorgement to suggest tamponade . Also seen is a moderate to large left pleural effusion , with atelectasis of a major portion of the left lower lobe . Subtle opacity overlying the right anterior third rib , may represent a rib lesion or a pulmonary nodule . There is no pneumothorax .
    OUTPUT:
    
1 . Pericardial effusion or marked cardiomegaly . No tamponade . 2 . Large left pleural effusion with compressive atelectasis of major portion of the left lower lobe . 3 . 10 mm round opacity overlying the right anterior third rib , may represent a rib lesion or a pulmonary nodule . Correlation with prior imaging studies is recommended .