Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Previously noted patchy opacity in the right middle lobe appears improved . Linear opacity in the right the mid lung field is compatible with subsegmental atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormalities are identified .
    OUTPUT:
    
Subsegmental atelectasis in the right mid lung field . Otherwise , no acute cardiopulmonary abnormality .