Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided Port -A - Cath is in stable position . Persistent hyperinflation of the lungs is re - demonstrated . Left base opacity is persistent . Right mid to lower lung opacities may be minimally improved , but persist . There is slight blunting of the left costophrenic angle new since the prior study , which could be due to a trace pleural effusion . No pneumothorax is seen . Cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Right mid to lower lung and left base opacities have slightly improved in the interval , but persist .