Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette remains enlarged . The aorta calcified and tortuous . No pleural effusion or pneumothorax is seen . No overt pulmonary edema is . Patchy right base opacity most likely represents overlap of vascular structures although early pneumonia is not excluded in the appropriate clinical setting .
    OUTPUT:
    
Patchy right base opacity most likely represents overlap of vascular structures although early pneumonia is not excluded in the appropriate clinical setting .