Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A frontal upright AP view of the chest was obtained portably . There is no focal consolidation , pleural effusion or pneumothorax . Apparent elevation of the left hemidiaphragm is due to a left Bochdalek hernia , seen on ___ ___ . Bibasilar atelectasis is seen . Blunting of the costophrenic sulci are unchanged from ___ . The heart is mildly enlarged . Prominence of the right mediastinum is due to tortuous vessels as seen on prior CT , not significantly changed since ___ .
    OUTPUT:
    
No acute intrathoracic process .