Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . There is no pleural effusion or pneumothorax . A hiatal hernia is visible on the frontal view . A small amount of air is visible within it . Patchy medial right lower lung opacity suggests minor atelectasis in the right middle lobe . Otherwise , the lungs appear clear . Moderate - to - severe degenerative changes affect the right acromioclavicular joint . A suture anchor projects along the left humeral head .
    OUTPUT:
    
No evidence of acute disease . Small to moderate hiatal hernia . Patchy medial right basilar opacity , suggestive of atelectasis .