Hi, First of all, let me assure you that your son s problem is not all dangerous and it can be safely and completely cured with Homeopathic medicine. Adenoids is made up of same type of tissue as that of tonsils. Adenoid is situated in nasopharynx i.e.the area from where the air we breathe, travels. When this adenoid gland enlarges there is less space for air to go into lungs so child has to breathe through mouth to satisfy demand. So this enlarged adenoid has an effective cure in Homeopathy. So you can contact for further treatment. In which city you are living?