Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patchy medial right lung base opacity is seen with consolidation better characterized on preceding CT earlier today . The left lung is clear . No large pleural effusion is seen . There is no pneumothorax . Cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Patchy medial right base opacity worrisome for pneumonia or aspiration .