Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: 3 .4 cm right middle lobe mass is again seen and grossly unchanged in size since ___ . Otherwise no parenchymal opacities concerning for pneumonia . Cardiac size is top normal . Trace left pleural effusion . No pneumothorax .
    OUTPUT:
    
No evidence of pneumonia . 3 .4 cm right middle lobe mass . Trace left pleural effusion .