Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation , pleural effusion , pulmonary edema , or pneumothorax . The cardiomediastinal silhouette is normal . A left lower lobe pulmonary nodule is grossly similar to the perifissural nodule seen on prior chest CT .
    OUTPUT:
    
No acute cardiopulmonary process .