nasopharynx

TNM Staging of Nasopharyngeal Carcinoma (AJCC 8)

Malignancies arising in nasopharynx / nasopharyngeal carcinoma (NPC) have different natural behavior and therapeutic consideration than other head and neck cancers. Nasopharyngeal carcinoma also has a very skewed geographic and ethnic distribution, with 80% of the global burden in Asian countries.

Anatomy and Physiology of Nasopharynx

The nasopharynx is an air-containing cavity at the back of the nose, which occupies the uppermost extent of the aerodigestive tract. It’s like a small cuboidal box about two to three centimeters front to back and about three to four centimeters top to bottom and side to side. The cavity is lined by pseudostratified ciliated