Spot in brain may control smoking urge - Yahoo! News:
"'What this study shows unequivocally is the insula is a key structure in the brain for perceiving the urges to take the drug,' urges that are 'the backbone of the addiction,' Volkow added. Why? The insula appears to be where the brain turns physical reactions into feelings, such as feeling anxious when your heart speeds up. When those reactions are caused by a particular substance, the insula may act like sort of a headquarters for cravings."

I wonder if the patient had any other addictions that he just "forgot about"?