Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is interval increase and left lower lobe opacity , worrisome for pneumonia and / or aspiration , with a trace associated pleural effusion . No focal consolidation is seen on the right . No pneumothorax is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Increase in left lower lobe opacity worrisome for pneumonia with possible small associated left pleural effusion . Recommend followup to resolution .