Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . Mediastinal and hilar contours are unremarkable . There is minimal atelectasis in the lung bases in the setting of low lung volumes . Lungs are otherwise clear without focal consolidation . No pleural effusion or pneumothorax is visualized . No acute osseous abnormality is detected . Calcification adjacent to the superior and lateral aspect of the left humerus may reflect calcific tendinopathy .
    OUTPUT:
    
Slightly low lung volumes with mild bibasilar atelectasis . No pneumonia .