Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A chest port ends in the right atrium . Reticular and micronodular opacities at the lung bases , right greater than left are new . The heart size is within normal limits . The upper abdomen is unremarkable . Emphysema is noted with upper lung predominance .
    OUTPUT:
    
1 . Reticular and micronodular opacities at the lung bases , right worse than left , are new . These findings may represent atypical pneumonia or aspiration , and less likely metastatic disease . 2 . Emphysema .