BioMed Research International

Research Article

A Study of 358 Cases of Locally Advanced Nasopharyngeal Carcinoma Receiving Intensity-Modulated Radiation Therapy: Improving the Seventh Edition of the American Joint Committee on Cancer T-Staging System

Table 4

Univariate survival analysis of 6 anatomic sites.


Anatomy (number)	5-year OS		5-year LRFS		5-year DMFS		5-year DFS
Anatomy (number)	%		%		%		%

MPM
+(264)	83.1	0.150	93.6	0.812	80.8	0.078	73.2	0.156
−(82)	86.9	0.150	93.6	0.812	89.7	0.078	82.6	0.156
Skull
+(276)	74.7	0.021	93.8	0.220	80.9	0.092	71.9	0.018
−(70)	87.6	0.021	97	0.220	90.0	0.092	87.1	0.018
PS
+(125)	66.3	0.000	88.1	0.008	72.8	0.000	61.5	0.000
−(221)	84.1	0.000	96.6	0.008	88.6	0.000	83.4	0.000
LPM
+(100)	67	0.007	91.4	0.171	74.5	0.01	66.1	0.029
−(246)	81.6	0.007	94.5	0.171	86.4	0.01	78.9	0.029
Cavernous
+(126)	65.8	0.000	89.8	0.113	75	0.005	63.8	0.001
−(220)	84.8	0.000	95.6	0.113	87.4	0.005	82.2	0.001
Cranial nerve
+(67)	75.6	0.226	91.7	0.400	79.2	0.342	72.6	0.381
−(279)	77.4	0.226	93.8	0.400	83.8	0.342	75.8	0.381

MPM, medial pterygoid muscle; PS, paranasal sinuses; LPM, lateral pterygoid muscle.