Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal and hilar contours unremarkable . Again seen is a right lower lobe mass with increased opacification at the right lung base with a small right pleural effusion , which are expected changes post - bronchoscopy . There is no left pleural effusion . Emphysematous changes at the lung apices limits assessment , but no pneumothorax is seen .
    OUTPUT:
    
No pneumothorax . Expected changes at the right lung base post bronchoscopy .