Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperexpanded with flattening of the diaphragms and increased AP diameter . There is mild right middle lobe atelectasis . Otherwise , the lungs are clear . No pleural effusion , pulmonary edema , or pneumothorax . The heart is top - normal in size . The ascending and descending aorta are slightly tortuous or ectatic . The mediastinum and hila are unremarkable . There is diffuse bony demineralization . Mild degenerative changes are noted throughout the thoracic spine with loss of intervertebral disc height and endplate sclerosis . Anterior compression deformity of mid-thoracic vertebral body appears chronic ( approximately ___ % loss of vertebral body height ) .
    OUTPUT:
    
1 . No acute intrathoracic process . 2 . Hyperinflated lungs and other findings may suggest chronic pulmonary disease , but non-specific . 3 . Top - normal heart size . 4 . Anterior compression deformity of mid-thoracic vertebral body appears chronic .