Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patchy lingular opacity at the lateral left lung base may relate to atelectasis and scarring although developing pneumonia is not excluded . The right lung is clear . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Patchy lingular opacity at the lateral left lung base may relate to atelectasis and scarring although developing pneumonia or pulmonary infarct is not excluded in the appropriate clinical setting .