Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are now essentially clear noting mild left basilar atelectasis . Prior right effusion is no longer visualized based on this portable frontal view . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities , posterior cervicothoracic fixation hardware is new since prior .
    OUTPUT:
    
No acute cardiopulmonary process .