Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is subtle patchy lateral left lower lobe opacity which could be due to atelectasis or infection in the appropriate clinical setting . Recommend followup to resolution . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable and unremarkable .
    OUTPUT:
    
Subtle left lower lobe opacity could be due to atelectasis or infection . Recommend followup to resolution .