Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , resulting in bronchovascular crowding . The heart remains enlarged . The aorta is tortuous . The patient is status post median sternotomy , with intact sternotomy wires . There is no pneumothorax , pleural effusion , or consolidation . Calcified nodule in the right lower lobe is again noted .
    OUTPUT:
    
No acute cardiopulmonary process .