Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . Subtle leftward indentation on the trachea above the level of the clavicle could be due to enlarged right lobe of the thyroid .
    OUTPUT:
    
No acute cardiopulmonary process . Subtle leftward indentation on the trachea above the level of the clavicle could be due to enlarged right lobe of the thyroid or other mediastinal lesion . Nonurgent ultrasound or chest CT could further assess .