Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Unchanged mild cardiomegaly . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . There is consolidation in the left lower lung , concerning for atelectasis , aspiration or pneumonia . Right basilar atelectasis . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities . There are multilevel degenerative changes of the visualized spine .
    OUTPUT:
    
Consolidation in the left lower lung , concerning for atelectasis , aspiration or pneumonia .