Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mild to moderately enlarged . The aorta is tortuous . Mild emphysematous changes are noted , and there is mild interstitial pulmonary edema . Streaky opacity within the left lung base likely reflects atelectasis . No pleural effusion or pneumothorax is demonstrated . No acute osseous abnormalities seen .
    OUTPUT:
    
Mild interstitial pulmonary edema . Emphysema . Left basilar atelectasis .