Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment is limited by low lung volumes as well as patient rotation . Heart size is accentuated due to low lung volumes appearing borderline enlarged . The mediastinal and hilar contours are grossly unremarkable . Crowding of bronchovascular structures is seen without overt pulmonary edema . Patchy opacities within the lung bases presumably reflect atelectasis . No focal consolidation , pleural effusion or pneumothorax is detected . Previously noted focal opacity overlying the left lateral mid lung field is not clearly visualized on the current examination . Multiple clips are again seen within the right axilla . Compression deformity of a mid thoracic vertebral body is new from ___ , but appears to reflect a chronic abnormality . There are mild to moderate multilevel degenerative changes .
    OUTPUT:
    
Low lung volumes with probable bibasilar atelectasis .