Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left greater than right bibasilar opacities are more conspicuous as compared to the prior study , while could are be due to progression of chronic change , infectious process is of concern . No large pleural effusion is seen although trace pleural effusion be difficult to exclude . No pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . Thecal catheter is grossly stable in position .
    OUTPUT:
    
Increased bibasilar opacities raise concern for infectious process .