Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The mediastinal and hilar contours are unremarkable . The pulmonary vascularity is normal . There is no focal consolidation , pleural effusion or pneumothorax . Relative lucency within the lung apices is reflective of paraseptal emphysema , better delineated on the prior CT . Minimal streaky opacities are noted in the lung bases likely reflective of atelectasis . There are no acute osseous abnormalities .
    OUTPUT:
    
Minimal atelectasis in the lung bases but no evidence for pneumonia or pulmonary edema .