Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously noted opacity in the left perihilar region has resolved , the lungs are now clear . There is no focal consolidation , effusion , or pneumothorax . There is slight leftward deviation of the trachea at the thoracic inlet potentially related to right - sided thyroid nodule seen on prior ultrasound . Cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process . Leftward deviation of the trachea at the thoracic inlet , potentially related to right - sided thyroid enlargement / nodule .