Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were reviewed and compared to the prior study . Considering the low lung volumes , the lung fields are clear . Small calcifications projecting over the right scapula and upper lung are of unknown etiology , but no known clinical significance . The heart size is normal and there is no evidence of vascular congestion , pleural effusion , or pneumothorax . There are no concerning soft tissue lesions .
    OUTPUT:
    
No evidence of active disease .