Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette and mediastinal and hilar contours are within normal limits . No CHF , focal infiltrate , effusion , or pneumothorax is detected . No mediastinal air or free air beneath the diaphragm is identified . The manubrium , sternum and xiphoid are not optimally visualized on the lateral view , but they were well seen on a CT from ___ and the appearance on today 's exam likely reflects limitations of positioning . Retrosternal fat is grossly unremarkable . Bony structures about the chest are otherwise grossly unremarkable .
    OUTPUT:
    
No acute pulmonary process identified .