Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There are low lung volumes . There is moderate elevation of the right hemidiaphragm with overlying atelectasis . No definite focal consolidation is seen . There is no pleural effusion or pneumothorax . Slight prominence of the right hilum may relate to patient 's elevated right hemidiaphragm and subsequent lower volume of the right lung . The cardiac and mediastinal silhouettes is not enlarged . The aorta is calcified . Retrocardiac density with lucency within seen both on the frontal and lateral views likely represents a large hiatal hernia .
    OUTPUT:
    
1 . Large hiatal hernia . 2 . Elevated right hemidiaphragm . No definite focal consolidation .