Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . The heart size is normal . Mild widening of the superior mediastinum is likely related to low lung volumes . No pulmonary vascular engorgement is seen , though there is mild crowding of the bronchovascular structures . No focal consolidation , pleural effusion or pneumothorax is identified . The osseous structures are within normal limits .
    OUTPUT:
    
Low lung volumes which accentuates the superior mediastinal width and slightly limits assessment of the pulmonary parenchyma . No gross radiographic evidence for pneumonia .