Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph ___ at 13 :06 is submitted .
    OUTPUT:
    
Right Port -A - Cath and right subclavian PICC line are unchanged in position . Persistent , possibly slightly smaller , left effusion with no evidence of pneumothorax . Retrocardiac consolidation suggestive of compressive atelectasis given the effusion . Superimposed pneumonia can not be excluded . Streaky opacities at the right base likely reflect atelectasis . The cardiac and mediastinal contours are stable . No pulmonary edema .