Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac and mediastinal silhouettes are stable . Posterior left lower lobe nodule opacity correspond the patient 's known pulmonary malignancy . Multiple smaller or pulmonary nodules bilaterally , better assessed on CT . Since the prior study , there has been development of large right lower lung field , possibly right middle lobe consolidation , worrisome for pneumonia . Left base and right perihilar opacities are grossly stable . Evidence of pulmonary emphysema is noted . Trace pleural effusions .
    OUTPUT:
    
New right middle lobe opacity , worrisome for pneumonia . Left lower lobe pulmonary nodule consistent with patient 's known lung cancer . Additional bilateral pulmonary nodules better assessed on CT . Possible trace pleural effusions .