The upper part of the pharynx located in the back of the nasal cavity. This area in children sometimes has excess adenoid tissue which can cause nasal obstruction or be contributing to it. This is why during evaluation of people with nasal obstruction, including kids, it’s important to look all the way in the back of the nasal cavity, which may necessitate the use of an endoscope which is a small thin camera that allows you to see this area.