Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A frontal upright view of the chest was obtained portably . The lungs are well expanded and clear without focal consolidation , pleural effusion or pneumothorax . Blunted right costophrenic angle likely reflects pleural scarring . There is minimal left basilar atelectasis . Heart size is normal . Mediastinal silhouette and hilar contours are normal . No displaced rib fracture is seen . No free air under the diaphragm . Partially imaged in anterior cervical spinal fusion hardware .
    OUTPUT:
    
No acute intrathoracic process .