Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . There is a hazy opacity located to the left of the heart border that is not seen on the lateral view . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is normal . There are no bony abnormalities . There is no free air under the right hemidiaphragm .
    OUTPUT:
    
Small hazy opacity located to the left of the heart border see only on the frontal radiograph , not substantiated on the lateral view , most likely due to atelectasis vs pneumonia .