Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate no acute intrathoracic process . The mediastinal and pleural structures are unremarkable . A band of hyperdensity is seen at the right lung base , likely represents subsegmental atelectasis . There is no consolidation , pleural effusion or pneumothorax . No suspicious osseous lesions are seen .
    OUTPUT:
    
No acute intrathoracic process .