Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . Sub - 5 - mm pulmonary nodule seen on prior CT from ___ are not well appreciated on the current study , likely below the resolution of conventional radiography . No definite pulmonary nodules are identified . The heart size is normal . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen .
    OUTPUT:
    
1 . No acute cardiac or pulmonary process . 2 . No definite pulmonary nodules identified . Previously seen pulmonary nodules on CT from ___ are not appreciated on the current study .