Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . Cardiomediastinal and hilar contours are unremarkable . Mild calcification is noted in the right lower paratracheal station , likely representing a calcified lymph node . The aorta is tortuous . There is no pleural effusion . There is blunting of the left costophrenic angle which may represent a small pleural effusion .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Blunting of the left costophrenic angle may represent a small left - sided pleural effusion .