Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no evidence of focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . The previously described right lower lobe nodule is no longer discretely identified . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
1 . No evidence of acute cardiopulmonary process . 2 . Nonvisualization of the previously described 13 mm right lower lobe nodule , suggesting that this finding was likely secondary to the pulmonary vasculature .