Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear unchanged . There is no pleural effusion or pneumothorax . Areas of minor scarring in the left lower lung , probably for the most part in the lingula , appear unchanged . Projecting over the lateral left lung apex there is a small newly apparent nodular focus measuring about 5 - 6 mm , a potential lung nodule . No corresponding opacity is visible on the prior study .
    OUTPUT:
    
1 . No evidence of acute cardiopulmonary disease . 2 . Possible nodule in the left upper lobe . Chest CT is recommended when clinically appropriate . Recommendation for chest CT discussed with Dr . ___ on ___ at 3 : 45 pm by telephone .