Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is markedly enlarged . The aorta is calcified . Perihilar opacities may relate to enlargement of the pulmonary arteries and vascular engorgement . A more confluent opacity at the right lung base and is seen and an underlying infection is not excluded . There is persistent mild elevation of the right hemidiaphragm . Difficult to exclude a small right pleural effusion . No evidence of pneumothorax .
    OUTPUT:
    
Perihilar opacities may relate to enlargement of the pulmonary arteries and vascular engorgement . More confluent opacity at the right lung base , underlying infection not excluded . Difficult to exclude a small right pleural effusion . Persistent marked enlargement of the cardiac silhouette .