Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . The thoracic aorta is tortuous as before . Patchy opacities in the left retrocardiac region have increased from the prior examination . Additional opacities at the base of the right lung appear increased . A trace left pleural effusion is demonstrated .
    OUTPUT:
    
Bibasilar opacities appear minimally increased from the prior examination in ___ concerning for possible infection or recurrent aspiration .