My 10 year old dd has noticed this evening a lump inside her nostril. I had a look with a torch and can see it quite clearly, just in one side. I looked in my own nose for comparison and can't see anything like it. Could it be a nasal polyp? Or something more sinister? Is a nasal polyp on its own dangerous? I'm panicking a bit, and so is she, but I have told her it's nothing to worry about for now.