Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP semi-upright and lateral views of the chest were obtained . The heart is normal size and cardiomediastinal silhouette is stable . There is no focal consolidation , pleural effusion , or pneumothorax . Calcifications of the tracheobronchial tree are again noted . Bones are demineralized . There is exaggerated thoracic kyphosis and degenerative changes in the spine .
    OUTPUT:
    
No acute intrathoracic abnormalities .