Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . There is moderate cardiomegaly with left ventricular predominance , similar to prior examination . The mediastinal and hilar contours are largely unchanged , though there is a more prominent opacity in the right infrahilar region . There is streaky atelectasis in both lung bases . There is no pleural effusion or pneumothorax . Mild multilevel degenerative changes are seen throughout the thoracic spine .
    OUTPUT:
    
No definite consolidation identified , though right middle lobe pneumonia is not entirely excluded in the appropriate clinical context .