Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size and cardiomediastinal contours are normal . The known bilateral pulmonary nodules are not conspicuous on this exam . Mild hyperinflation with prominent retrosternal clear space . No focal consolidation , pleural effusion , or pneumothorax . Surgical clips in the mid upper abdomen are unchanged .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Known bilateral pulmonary nodules are not clearly conspicuous on today 's exam . Please refer to prior CT report for followup recommendations .