Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is accentuated by the low lung volumes , and is likely mildly enlarged . The mediastinal contours are unremarkable . There is no pulmonary vascular congestion , and the hilar contours are unremarkable . Minimal linear and streaky opacity in the left lung base likely reflects atelectasis . There is no focal consolidation . No pleural effusion or pneumothorax is present . No acute osseous abnormalities are identified .
    OUTPUT:
    
Low lung volumes with mild left basilar atelectasis .