Staging of nasopharyngeal carcinoma

Staging of NPC, Tl tumor confined to nasopharynx
T2 tumors invading the nasal cavity, oropharynx or tumor in the parapharyngeal space so line (SO line styloid process to the foramen magnum posterior midline connection; up and down the neck of the dividing line for the lower edge of the cricoid cartilage) ago.
T3 tumors in the parapharyngeal space or involving the skull base after so lines, Teng Wo wing groups or before or after a single cranial nerve damage.
T4 both before and after cranial nerve damage or violation of paranasal sinus tumors, cavernous sinus, orbit, frontal fossa
NO no palpable lymph nodes
Nl lymph node on the diameter of <4cm, activities
N2 lymph node under the 4-7cm
N3 supraclavicular lymph nodes or diameter> 7cm
MO element distant metastasis
Distant metastasis Ml
Clinical stage
I of TINOMO
H of T2NO-IMO, TO-2NIMO E of T3NO-2MO, TO-3N2MO
Na staging of nasopharyngeal carcinoma T4NO-3MO, TO-4N3MO Nb of any T, any N, Ml.