Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP portable chest radiograph was obtained . Since the most recent prior radiograph , there is slight improvement in diffuse bilateral pulmonary opacities , particularly on the left . There is a small left - sided pleural effusion which is mostly unchanged . There is no evidence of pneumothorax . Moderate cardiomegaly is stable . Right PICC tip is unchanged .
    OUTPUT:
    
Slight improvement in diffuse bilateral diffuse pulmonary opacities , particularly on the left .