Hi. I had craniotomy 9 yrs ago. Today, i visited my doctor because i m getting headaches and nosebleeds a couple of times past 2 months. He read my brain scan a year ago... He mentioned about polyps and some magnets which i didn t quite understand. But he said, i m ok as long as i don t have dramatic symptoms. Should i be concerned with polyps? What magnets was he talking about?