Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable radiograph of the chest was acquired . Lung volumes are low , causing exaggeration of the heart size and accentuation of the pulmonary vasculature . Given this limitation , there is no focal consolidation . The heart size is within normal limits . No pleural effusions are seen . There is no pneumothorax . Multilevel degenerative changes of the thoracic spine are noted .
    OUTPUT:
    
Limited study given poor inspiratory effort . No acute cardiac or pulmonary process .