Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is borderline in size . There is a large hiatal hernia with an air - fluid level . Streaky associated opacities in both lung bases suggest associated atelectasis . Otherwise , the lungs appear clear . There is no pleural effusion or pneumothorax . Moderate degenerative changes are stable along the visualized thoracolumbar spine .
    OUTPUT:
    
Large hiatal hernia with associated parenchymal opacity , probably associated atelectasis ; otherwise unremarkable .