Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The exam is somewhat limited by low lung volumes and lordotic positioning . Within this limitation , the cardiomediastinal silhouette and hilar contour is stable . Mild widening of the mediastinum is unchanged and corresponds to mediastinal lipomatosis on prior CT . Again appreciated is a right - sided Port - A - Cath with the tip terminating at the cavoatrial junction . Bibasilar atelectasis is noted . There is no effusion or pneumothorax . No acute bony change is identified .
    OUTPUT:
    
No acute intrathoracic process . Bibasilar atelectasis and low lung volumes .