Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is a large hiatal hernia in the left lower chest causing associated relaxation atelectasis . There is no focal consolidation , pleural effusion , pulmonary edema , or pneumothorax . The visualized portions of the cardiomediastinal silhouette are within normal limits .
    OUTPUT:
    
Large hiatal hernia . No evidence of acute cardiopulmonary process .