Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal contour is normal . The lungs are clear . No pneumothorax seen . No rib fractures seen . There is degenerative disk disease noted in the mid thoracic spine . There are 2 lower thoracic vertebral bodies which demonstrate mild collapse , correlation with any clinical history of back pain recommended . A skin marker was placed over the site of the patient 's discomfort corresponds to the posterior lateral ribs . Moderate degenerative change in the right acromioclavicular joint .
    OUTPUT:
    
Degenerative changes in the thoracic spine . There is partial collapse of 2 of the mid to lower thoracic vertebrae . These are age indeterminate , correlation with any clinical history of back pain is recommended .