Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes cause bronchovascular crowding , particularly on the lateral view . Obscuration of the lateral left hemidiaphragm most likely represents atelectasis . Airspace opacity in the medial right lower lung also likely represents atelectasis . There is no pulmonary edema or pneumothorax . Rightward deviation of the trachea at the level of thoracic inlet is unchanged from prior studies and caused by an enlarged left thyroid lobe .
    OUTPUT:
    
1 . Low lung volumes causing bronchovascular crowding . 2 . Bibasilar opacities most likely represent atelectasis . 3 . Rightward tracheal deviation by an enlarged left thyroid lobe .