Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouettes are stable , and within normal limits . The bilateral hila are unremarkable . Equivocal left lower lobe alveolar opacities could represent pneumonia in the appropriate clinical setting . The lungs are otherwise clear . There is no pulmonary vascular congestion or pulmonary edema . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Left lower lobe alveolar opacities could represent pneumonia in the appropriate clinical setting .