Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Subtle right base opacity may be due to atelectasis , overlap of vascular structures , early consolidation is not excluded in the appropriate clinical setting . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Subtle right base opacity may be due to atelectasis , overlap of vascular structures , early consolidation is not excluded in the appropriate clinical setting .