Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left costophrenic angle is incompletely imaged on frontal view . No focal consolidation , pleural effusion , pneumothorax , or pulmonary edema is seen . Heart size is normal . The aorta is tortuous . Linear density at the left lung apex may be related to history of spontaneous pneumothorax . There is leftward deviation of the trachea . Right acromioclavicular degenerative changes are noted . There is calcification of the anterior longitudinal ligament , consistent with DISH .
    OUTPUT:
    
1 . No radiographic evidence for acute cardiopulmonary process . 2 . Leftward deviation of the trachea . Most likely etiology is thyroid enlargement ; clinical correlation is recommended . Ultrasound could be performed if indicated . This finding was discussed with Dr . ___ by Dr . ___ by phone at 8 :01 a .m . on ___ after attending radiologist discovery of this finding .