Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , which leads to bronchovascular crowding . No focal consolidation is identified . There is mild pulmonary vascular congestion . The cardiac silhouette is normal . Calcifications of the tracheobronchial tree as well as the aortic arch are noted . There is no pleural effusion or pneumothorax . Median sternotomy wires are intact . Chronic bilateral humeral head deformities are unchanged .
    OUTPUT:
    
Low lung volumes but no focal consolidation . Mild pulmonary vascular congestion .