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Table 2 Association of primary tumor extension and MSI

From: A new T classification based on masticator space involvement in nasopharyngeal carcinoma: a study of 742 cases with magnetic resonance imaging

Primary tumor extension

MSI -

MSI +

 
 

No.

%

No.

%

Pvalue

Intracranial

28

5.0

56

31.1

<0.001

Prevertebral space

213

38.0

156

86.7

<0.001

Base of skull bony structure

260

46.3

159

88.3

0.002

Paranasal sinuses

37

6.5

52

28.9

0.020

Parapharyngeal space

334

59.4

158

87.8

0.045