Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left PICC tip has been retracted in the interim , now projects over the expected region of the distal left brachiocephalic vein near the SVC confluence . Lung volumes have improved slightly in the interim . Persistent small left pleural effusion and atelectasis . Opacity projecting over the right lateral sixth rib and is unchanged , reflecting old fracture . No pneumothorax or edema . Aortic knob calcifications are unchanged . There is mild , broad dextroconvex scoliosis of the thoracolumbar spine .
    OUTPUT:
    
1 . Left PICC tip now projects over the distal left brachiocephalic vein near the SVC confluence . 2 . Persistent small left pleural effusion with atelectasis . 3 . Edema has resolved .