This is a Mic Key Button. It has a balloon inside of his skin holding it in place.
Since Janice, Sheena & Heidi have never seen what Nathan's button looks like I wanted to post a few pictures for them. The button has a cover across it that covers the port that the extension tube set connects to. During the day we bolus feed him (meaning we attach a large syringe to the connecting tube set and let the milk drain through over a half an hour or so using gravity). At night he is connected to a machine that pumps milk from a bag at a little over an ounce an hour. This goes on for 12 hours at night. At night he is fed about 14 ounces of milk and during the day he gets about 7-8. He has such a little tummy because of the Nissen and can only tolerate between 2 - 2 1/2 ounces of milk in his belly at a time. We are working on trying to up his feeding amount during the day and lessening the amount of food he gets at night. Right now because he is fed at night, he sleeps from about 9:00 p.m. to around 9:00 a.m. (I'm so spoiled. Now if only Ellie did that too!)
Up until 2 weeks ago we really didn't have any problems with the button. Now granulation tissue (which is the body's way of trying to close the hole on the foreign object) is forming. As the button is still relatively new I still can't put the steroids on the wound site to keep it from forming. Hopefully in a couple of days the doctor will prescribe some cream for Nathan's button. We don't know for sure how long Nathan will keep this. He has to be able to get all of his nutrition by mouth, which until after he has his surgeries we won't even know for sure.