Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable supine radiograph of the chest demonstrates low lung volumes with resultant bronchovascular crowding . The left lower lobe has improved aeration and there has been interval clearing of mild interstitial edema . Chest tubes project over the left hemithorax . Severe cardiomegaly is stable . No pneumothorax . The endotracheal tube ends 3 .2 cm from the carina . The left ventricular assist device is in unchanged position . Swan - Ganz catheter tip ends in the right pulmonary artery .
    OUTPUT:
    
1 . The left lower lobe has improved aeration and there has been interval clearing of mild interstitial edema . 2 . No pneumothorax or pleural effusion .