If your problem is hydrocephalus, we've probably put a shunt in (more about that in a week or so) to help keep your CSF pressures normal. If the problem is an infection, we're done with instilling drugs into your brain. If the problem is a tumor in your brain, we've installed something called an Ommaya reservoir to pump little doses of chemo toward that tumor on a continuous basis. Whatever it is, we're done with tubes in your brain.