An adenoidectomy is a surgery to take out the adenoids, which are soft tissues behind the nose. When adenoids get too big or infected, they can make it hard to breathe, cause ear infections, or make kids snore at night. This simple surgery helps you breathe better and sleep more easily. It’s usually done while you’re asleep, and sometimes doctors remove the tonsils at the same time. After resting for a few days, most kids feel great again.