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Table 1 Demographic, clinical, and treatment characteristics of patients (n = 26)

From: Dose distribution of intensity-modulated proton therapy with and without a multi-leaf collimator for the treatment of maxillary sinus cancer: a comparative effectiveness study

Characteristic

N(%)

Gender

 Female

5(19%)

 Male

21(81%)

Maxillary sinus

 Right

13(50%)

 Left

13(50%)

Histological type

 Squamous cell carcinoma

24(92%)

 Spindle cell carcinoma

1(4%)

 Small cell carcinoma

1(4%)

T stage

 T2

2(8%)

 T3

11(42%)

 T4

13(50%)

N stage

 N-

26(100%)

 N+

0(0%)

Radiotherapy

 Preoperative

23(88%)

 Definitive

3(12%)

Chemotherapy

 No

0(0%)

 Yes

  Arterial infusion chemotherapy

23(88%)

  Other chemotherapy

3(12%)