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 , focal consolidation or pneumothorax . Right lung base opacities are noted obscuring right cardiac ___ . Hilar and mediastinal silhouettes are unremarkable . Heart size is normal . There is no pulmonary edema . Partially imaged upper abdomen is unremarkable .
    OUTPUT:
    
Right lung base opacity obscuring right cardiac ___ , ___ represent atelectasis or infection in the appropriate clinical setting .