Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small bilateral pleural effusions . Increased opacity of the left base may be due to associated atelectasis from increased pleural effusion or pneumonia . No pneumothorax is seen . Moderate cardiomegaly unchanged . Mediastinal hilar silhouettes are unchanged . Transvenous right atrial and right ventricular pacer leads are contiguous with the left pectoral generator . Again noted are clips overlying bilateral chest walls given history of bilateral mastectomies . Metal clips again noted in the right upper quadrant .
    OUTPUT:
    
Small bilateral pleural effusions increased since ___ . New left base opacity may be atelectasis associated with increased diffusion the can not exclude pneumonia . No focal consolidation noted in the right upper lobe . Otherwise no significant change since ___ .