Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The cardiomediastinal silhouette is stable . There is minimal bibasilar atelectasis . There is subtle opacity at the right costophrenic angle , which most likely relates to atelectasis and vascular structures , although early infectious process is not excluded in the appropriate clinical setting . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Subtle opacity at the right costophrenic angle , which most likely relates to atelectasis and vascular structures , although early infectious process is not excluded in the appropriate clinical setting .