Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube ends 3 .5 cm above carina . NG tube is in adequate position . Improvement of right lower lobe density ; improvement has been on a short period of time , so it was probably secondary to aspiration . Stability of bilateral mild pulmonary edema . Stability also of left lower lobe density . Mediastinal and cardiac contour are within normal limits . No pneumothorax or pleural effusion .
    OUTPUT:
    
1 . Lines and tubes are in adequate position . 2 . Improvement of right lower lobe aspiration . Left lower lobe density is , however , stable . 3 . Stability of mild pulmonary edema .