Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right PICC tip is in the mid SVC . Sternotomy wires are intact . Mild vascular engorgement with normal heart size , no pleural effusion , mediastinal vein dilatation , or pulmonary edema . No new focal opacity or pneumothorax . Prior hyperinflated lung volumes are now mildly decreased with new mild right lower lobe atelectasis .
    OUTPUT:
    
New mild right lower lobe atelectasis . No pneumonia .