Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The cardiomediastinal and hilar contours are normal and unchanged . The patient is status post fixation procedure in the lower cervical and upper thoracic spine , which is unchanged . The pulmonary vasculature is normal . There is minimal atelectasis at the left base . The right lung is clear . There is minimal lateral left pleural thickening as also seen on the CT portion on the recent PET CT . There are no pleural effusions identified . No pneumothorax . Healed left sided rib fractures are more apparent on the current study .
    OUTPUT:
    
1 . Minimal left basal atelectasis . 2 . Minimal lateral left pleural thickening , also seen on recent PET - CT .