Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is a retrocardiac opacity which is most compatible with a large hiatal hernia . Coarsened lung markings likely reflects emphysema . No large consolidation effusion or pneumothorax is seen . The heart size appears grossly within normal limits . The thoracic aorta is densely calcified . There is mild prominence of the mediastinum which likely reflect vascular ectasia as well as large right thyroid nodule better assessed on same - day CT of the cervical spine . There is a lower thoracic compression deformity which is seen only on the lateral projection with approximately ___ loss of anterior vertebral body height . Correlate clinically .
    OUTPUT:
    
Coarsened lung markings likely reflect emphysema . Large hiatal hernia . Age-indeterminate lower thoracic compression deformity .