Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrate clear lungs without focal consolidation . There is bilateral basilar atelectasis and no pleural effusion . No pneumothorax . Pulmonary vasculature is unremarkable . The cardiomediastinal and hilar contours unremarkable .
    OUTPUT:
    
No acute intrathoracic process .