Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Patient is status post CABG with median sternotomy and aortic valve replacement . Moderate - to - severe emphysema with apical predominance . 7 mm nodular opacity in the right upper lobe has not changed . Heart is top - normal in size . No focal consolidation , pleural effusion or pneumothorax . Vertebroplasty changes are seen in the mid-thoracic spine .
    OUTPUT:
    
No acute intrathoracic process .