Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Linear atelectasis is seen in the region of the lingula . No focal consolidation , pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Persistently low lung volumes . No acute cardiopulmonary abnormality .