Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are hyperinflated . There is significant apparent narrowing with rightward tracheal deviation secondary to a known thyroid nodule . Small left pleural effusion with moderate elevation of the left hemidiaphragm . Mild bibasilar atelectasis is unchanged . No pleural effusion on the right . No focal consolidation . No pneumothorax . No discrete lung lesions identified . Heart size is normal .
    OUTPUT:
    
1 . No evidence of pneumonia . No discrete lung lesions identified . 2 . Unchanged apparent tracheal narrowing and rightward tracheal deviation secondary to known left - sided thyroid enlargement . 3 . Small left pleural effusion with elevated left hemidiaphragm . 4 . Mild bibasilar atelectasis .