Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . No focal consolidation is identified . There is no pulmonary vascular congestion or overt pulmonary edema . No pleural effusion is identified . No pneumothorax is evident . Cardiomediastinal and hilar contours are within normal limits . There is loss of height of multiple lower thoracic vertebral bodies of uncertain etiology . Findings are unchanged since prior examination from ___ . A few thoracic vertebral body endplates have step - offs , findings which can be seen in hemoglobinopathies .
    OUTPUT:
    
1 . No acute cardiopulmonary process 2 . Subacute , mild loss of height of multiple lower thoracic vertebral bodies of uncertain etiology .