Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrate hypoinflated lungs with persistent atelectasis at the left lung base , similar to CT dated ___ . No new focal opacity . Persistent moderate cardiomegaly is noted . Moderate hiatal hernia is present . No pleural effusion or pneumothorax . Mediastinal contour and hila are otherwise unremarkable . Limited assessment of the upper abdomen is notable for coils within the mid abdomen and is otherwise unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .