Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is longstanding left hemidiaphragm elevation and blunting of the left costophrenic angle which is unchanged from multiple prior studies . The lungs are clear without pleural effusion , focal consolidation or pneumothorax . The pulmonary vasculature is not engorged . The cardiac silhouette is normal in size . The mediastinal and hilar contours are within normal limits . Degenerative changes are noted in the thoracic spine with bridging osteophytes .
    OUTPUT:
    
No acute cardiopulmonary process .