Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes . There is no pleural effusion or pneumothorax . Hilar and mediastinal silhouettes are unchanged . Intrathoracic aorta appears tortuous . Aortic arch calcifications are noted . Mild - to - moderate cardiomegaly is unchanged . There is mild pulmonary vascular congestion . Opacities in the right lung base are new since prior . Left lung base opacities persist . Partially imaged upper abdomen is unremarkable .
    OUTPUT:
    
1 . Moderate cardiomegaly , unchanged . Pulmonary vascular congestion . Basilar opacities , atelectasis or infection in the appropriate clinical setting .