Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left pigtail drain has since been removed . Left lung edema is slightly less . Otherwise , no overall significant change in the radiographic appearance of the lungs since ___ . Overall similar appearance of the left upper lung opacity that corresponds to a mass on CT with adjacent atelectasis and / or pneumonia . Persistent and overall similar probable small left pleural effusion and adjacent compressive atelectasis . No right pleural effusion . No pneumothorax . Mild cardiomegaly persists . Widening of the mediastinum probably corresponds to enlarged nodes on CT .
    OUTPUT:
    
No significant interval change other than removal of left PICC catheter and improved left pulmonary edema .