Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small right pleural effusion . Trace left pleural effusion may also be present . There may be an anterior right middle lobe small focus of opacity , which could be due to infection . No pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Small right pleural effusion and possible trace left pleural effusion . Anterior right middle lobe opacity , best seen on the lateral view , underlying infectious process is not excluded .