Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal AP and lateral views of the chest were obtained . Increased heterogenous opacity in the left lower lobe may represent infection in the appropriate clinical setting . The remainder of the lungs are clear aside from mild right basilar atelectasis . Trace pleural effusions are difficult to exclude bilaterally , with blunting of the posterior costophrenic angles on the lateral view . No pneumothorax . Cardiac and mediastinal silhouettes and hilar contours are normal .
    OUTPUT:
    
Heterogenous left lower lobe opacity may represent pneumonia in the appropriate clinical setting . Trace bilateral pleural effusions .