Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no pneumonia . Cardiomediastinal silhouette is normal . Hilar contours are normal . There is no pneumothorax or pleural effusion . A 6 mm nodular density projecting over ___ left posterior rib is identified . Previously a nodular density in the left lower lobe was also seen for which repeat radiographs with nipple markers were obtained . That radiograph demonstrated no evidence of abnormality however I do not see the nodule clearly on that radiograph . To confirm , a repeat radiograph with nipple markers can again be obtained .
    OUTPUT:
    
No pneumonia . Questionable 6 mm nodule . Can repeat radiograph with nipple markers while the patient is in the emergency room to definitively conclude if this is an actual nodule .