Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without consolidation or edema . Since the prior exam , a small right pleural effusion has developed . There is possibly a tiny left pleural effusion , too . There is no pneumothorax . The mediastinal contours are normal . The heart is mildly enlarged and unchanged .
    OUTPUT:
    
New small right and possibly tiny left pleural effusions . No focal opacity to suggest pneumonia .