Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are low . Retrocardiac opacity is compatible with a hiatal hernia . Mild basilar atelectasis noted without convincing evidence for pneumonia or edema . No large effusion or pneumothorax is seen . A calcified granuloma projects over the right upper lung . The imaged bony structures are intact . Cardiomediastinal silhouette appears stable .
    OUTPUT:
    
Mild basilar atelectasis and hiatal hernia . No convincing evidence for pneumonia or edema .