Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A vagal stimulator is noted projecting over the chest . There is a focal opacity in the right upper lung that reflects aspiration vs . pneumonia . There is no pneumothorax or pleural effusions . The heart is normal in size . There is no evidence of pneumoperitoneum and osseous structures are grossly intact .
    OUTPUT:
    
Right upper lung opacity that likely reflects aspiration vs . pneumonia .