Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Given lower lung volumes , the exam is largely stable from three days prior . Heart size is normal . Mediastinal , hilar contours are unremarkable . Scarring within the lung apices is unchanged . Subsegmental atelectasis is noted in the lung bases . The lungs are clear of focal consolidations . Pulmonary vascularity is normal . No pleural effusion or pneumothorax .
    OUTPUT:
    
Given lower lung volumes , no change from three days prior and no evidence of acute cardiopulmonary process .