Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent visualization of a large left pleural effusion with associated compressive atelectasis . Superimposed infection can not be excluded . No right - sided pleural effusion seen . A right - sided internal jugular Port - A - Cath terminates in the mid SVC . No pneumothorax . A fracture / osteotomy of the left clavicle is again noted . The left humerus is been resected .
    OUTPUT:
    
Unchanged appearances of a large left pleural effusion with associated compressive atelectasis . Superimposed infection can not be excluded . No pneumothorax seen .