Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy and right - sided PICC are unchanged in position . Preexisting parenchymal opacities , right greater than left are not significantly changed from the prior exam . There is likely a small right pleural effusion . There is no evidence of pneumothorax .
    OUTPUT:
    
Bilateral parenchymal opacities , right greater than left , are not significantly changed . Small right pleural effusion . No evidence of pneumothorax .