Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . A CBD stent in the right upper quadrant is again noted as well as a catheter in the anterior upper abdomen with adjacent surgical clips . There is no definite sign of pneumonia , pleural effusion or pneumothorax . A subtle nodular opacity adjacent to the left heart border in the left lower lung is seen on the frontal view , possibly may represent a new pulmonary nodule as it was not clearly seen on the prior exam . Cardiomediastinal silhouette appears stable . The hyperinflated widened AP diameter reflects known underlying emphysema . Bony structures appear intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Emphysema , possible nodule in the left lower lung . Recommend non-emergent CT to assess further . No signs of pneumonia or CHF .