Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . A 15 mm peripheral nodular opacity in the right upper lobe is stable since the prior CT of ___ . No new consolidation , pulmonary edema , or pleural effusion is seen . Hyperlucent upper lung zone suggests emphysema .
    OUTPUT:
    
1 . A 15 mm peripheral opacity in the right upper lobe stable since ___ . A chest CT is recommended to rule out an underlying mass . 2 . No evidence of pneumonia . Findings added to radiology critical report dashboard .