Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left chest wall port terminates in the lower SVC . No pleural effusion or pneumothorax . Lung volumes remain low , with chronic moderate elevation of the left hemidiaphragm . Prominent loop of splenic flexure . Heart size is top normal . Mild degenerative changes throughout the thoracic spine .
    OUTPUT:
    
No acute process . Low lung volumes and chronic elevation of the left hemidiaphragm .