Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal upright and lateral chest radiographs demonstrate low lung volumes . Accounting for differences in patient 's position , cardiomediastinal contour is relatively unchanged compared to the prior examination . Heart is normal in size . Thoracic aorta appears tortuous , similar to the prior examination . Focal rounded areas of increased density at the hila bilaterally likely represent calcified hilar nodes , unchanged from the prior examination . Basilar streaky opacities are most consistent with atelectasis . Lungs are otherwise clear without focal areas of consolidation . There is no pleural effusion . There is no pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality .