Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: New small left - sided pleural effusion . Left anterior mediastinal mass and left upper lobe nodular opacities are unchanged . Right lower lobe linear opacities are also unchanged . Right - sided Port - A - Cath with the tip in the low SVC . No pneumothorax .
    OUTPUT:
    
New small left - sided pleural effusion . Stable left anterior mediastinal mass .