Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided left subclavian PICC line is present , tip over proximal / mid SVC . No pneumothorax is detected . There is faint residual opacity in the right cardiophrenic region and at the left base . However , much of the previously seen opacity has resolved . No upper zone redistribution or other vascular plethora and no interstitial edema is identified . There is minimal blunting of the right and question left costophrenic angles , consistent with with small pleural effusions .
    OUTPUT:
    
Considerable interval improvement in previously seen opacities . Minimal residual opacity at both lung bases and probable small bilateral effusions .