Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two portable upright view of the chest are compared to previous exam from ___ . There is new right lung base opacity compatible with at least some component of pleural effusion with probable underlying airspace disease . The left lung remains essentially clear , noting mild scarring versus atelectasis at the lung base . Left subclavian central line is seen with tip at the cavoatrial junction . Cardiomediastinal silhouette is stable . Posterior spinal fixation hardware is partially visualized .
    OUTPUT:
    
Right basilar opacity in part due to pleural effusion with possible underlying airspace disease .