Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild right base subsegmental atelectasis is seen . There is no focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . There is subtle suggestion of a hiatal hernia . No pulmonary edema is seen .
    OUTPUT:
    
Mild right base atelectasis . Possible hiatal hernia .