Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Airspace opacities in the right lower lobe and left lower lobe are new since ___ . The cardiac and mediastinal contours are normal . The pleural effusions are small , if any . There is no pneumothorax .
    OUTPUT:
    
Bilateral lower lobe airspace opacities , greater in the right than left , concerning for pneumonia or aspiration in the correct clinical setting .