Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Mild to moderate cardiomegaly is unchanged with left ventricular predominance . The aorta demonstrates diffuse atherosclerotic calcifications . Lung volumes are low with crowding of bronchovascular structures . No overt pulmonary edema is present . Minimal atelectasis is noted in the lung bases without focal consolidation . No pleural effusion or pneumothorax is present . Clips are noted in the right upper quadrant of the abdomen . Moderate degenerative changes are seen in the imaged thoracolumbar spine with unchanged compression deformity of a vertebral body at the thoracolumbar junction .
    OUTPUT:
    
Low lung volumes with minimal atelectasis in the lung bases . No focal consolidation .