Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded , with a linear area of atelectasis in the left midlung , similar in appearance compared to the prior chest radiograph . Median sternotomy wires are again noted , along with mediastinal clips , in unchanged position . A moderate hiatal hernia is present . The cardio mediastinal silhouette is stable . There is no pneumothorax , pleural effusion , pulmonary edema , or focal airspace consolidation concerning for aspiration or pneumonia .
    OUTPUT:
    
No acute cardiopulmonary pathology . Moderate hiatal hernia .