Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Unremarkable mediastinal , hilar and cardiac contours are noted and stable . Mild bibasilar atelectasis is seen . No focal opacification concerning for pneumonia present . Minimal blunting of the costophrenic angles are likely related to pleural thickening . No definite pleural effusion identified . No pneumothorax present .
    OUTPUT:
    
No acute intrathoracic process .