Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are relatively low with secondary vascular crowding . There is no evidence of overt edema , consolidation or effusion . Cardiac silhouette is accentuated by low lung volumes and likely top - normal . Atherosclerotic calcifications seen at the aortic arch . Compression deformity of a lower thoracic vertebra is unchanged . Chronic changes also seen at the shoulders bilaterally .
    OUTPUT:
    
No acute cardiopulmonary process .