Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Heart size and cardiomediastinal contours are unremarkable other than a tortuous aortic contour . Small bibasilar atelectasis is present without focal consolidation , substantial pleural effusion , or pneumothorax . Posterior cervical and upper lumbar spine fusion constructs are incompletely imaged .
    OUTPUT:
    
No acute cardiopulmonary process .