Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are obtained . The lungs are well expanded and clear . The cardiomediastinal silhouette is unremarkable . There is mild kyphosis of the thoracic spine and possible fat deposition of the upper back , which may represent exogenous steroid use or ___'s disease .
    OUTPUT:
    
No evidence of cardiopulmonary disease . Mild kyphosis and upper back fat deposition may represent steroid use or ___ 's disease in the correct clinical setting .