Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes remain low . No significant change since ___ . No focal consolidation , edema , effusion , or pneumothorax . Heart size is normal . The mediastinum is not widened . The upper trachea at or just above the thoracic inlet is slightly displaced to the right , which could suggest a thyroid goiter . No acute osseous abnormality .
    OUTPUT:
    
1 . No focal pneumonia or pulmonary edema . 2 . Slight rightward displacement of the trachea suggests a mass in or around the left thyroid lobe . Correlate with clinical exam .