Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Innumerable bilateral pulmonary opacities are seen in this patient with extensive bilateral pulmonary metastases . More confluent area in the left mid to lower hemi thorax was most likely present on the prior chest CT . Slight blunting of the right costophrenic angle may be due to a trace pleural effusion versus atelectasis . No pneumothorax is seen . The cardiac and mediastinal silhouettes are grossly unremarkable . Left - sided Port - A - Cath terminates at the low SVC / cavoatrial junction .
    OUTPUT:
    
Innumerable bilateral pulmonary opacities in this patient with known extensive bilateral pulmonary metastases . Difficult to exclude an underlying acute infectious process , particularly in the lateral left mid to lower lung . Slight blunting of the right costophrenic angle may be due to atelectasis versus a trace pleural effusion .