Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were reviewed . Heart size is top normal . Mediastinal and hilar contours are stable . Median sternotomy wires and calcification in aortic knob are again noted . There is a small right pleural effusion , slightly increased compared to the prior study . There is also a possible small left pleural effusion . There is no focal consolidation concerning for pneumonia . There is no pulmonary edema .
    OUTPUT:
    
Small right and possible small left pleural effusions , increased compared to the prior study .