Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment slightly limited by patient rotation and low lung volumes . Heart size appears mildly enlarged . Aorta is slightly unfolded . The mediastinal and hilar contours are grossly unremarkable otherwise . Pulmonary vasculature is not engorged . Apart from minimal atelectasis in the lung bases , lungs are clear without focal consolidation . No pleural effusion or pneumothorax is identified . There are mild to moderate multilevel degenerative changes seen in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .