Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patchy left lower lobe opacity is worrisome for pneumonia and / or aspiration . No large pleural effusion is seen . There is no pneumothorax . The lungs are relatively hyperinflated . Cardiac and mediastinal silhouettes are grossly stable . Chronic left - sided rib deformities , including at posterior left fourth and seventh ribs suggests prior fractures .
    OUTPUT:
    
New patchy left lower lobe opacity worrisome for pneumonia and / or aspiration .