Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mild to moderately enlarged , unchanged . Mediastinal and hilar contours are within normal limits . Linear and streaky opacities in the lung bases appear relatively unchanged compared to the previous exam with minimal increased atelectasis noted at the right lung base . No focal consolidation , pleural effusion or pneumothorax is identified . There is no pulmonary edema . No acute osseous abnormality seen . Mild degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
Slightly increased right basilar atelectasis .