Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient has a tracheostomy . A new PICC line terminates in the lower superior vena cava . The cardiac , mediastinal and hilar contours open are probably unchanged although the cardiac contour is partly obscured by a new moderate left - sided pleural effusion with probable opacification of portions of the left lower lobe and lingula . More superiorly the left lung remains clear . The right lung also remains clear . There is no evidence for pleural effusion on the right side .
    OUTPUT:
    
New left - sided pleural effusion with opacifications probably attributed atelectasis . Infection does not need to be invoked to explain this appearance but is not excluded .