Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . Aorta remains unfolded . Mediastinum and hilar contours are unremarkable . Pulmonary vascularity is normal . Except for mild subsegmental left basilar atelectasis , the lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . No acute osseous abnormalities are detected .
    OUTPUT:
    
No acute cardiopulmonary process .