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Table 1 Patient characteristics

From: Image-guided intensity modulated radiotherapy with helical tomotherapy for postoperative treatment of high-risk oral cavity cancer

  Tomotherapy (N = 19)
Variable No. of patient (%)
Age (years)  
   Median 50
   Range 24-70
Gender  
   Male 17 (89.5%)
   Female 2 (10.5%)
Smoking  
   Yes 16 (84.2%)
   No 3 (15.8%)
Alcohol drinking  
   Yes 10 (52.6%)
   No 9 (47.4%)
Betel nut chewing  
   Yes 12 (61.2%)
   No 7 (36.8%)
^ECOG Performance Status  
   0 9 (47.4%)
   1 9 (47.4%)
   2 1 (5.2%)
Subsite  
   Oral tongue 9 (47.4%)
   Buccal mucosa 6 (31.6%)
Gingiva 3 (15.8%)
   Retromolar trigone 1 (5.3%)
Pathology  
   Squamous cell carcinoma 19 (100%)
Resection-margin status  
   Positive 1 (5.3%)
   Close 9 (47.4%)
   Negative 9 (47.4%)
Extracapsular spread  
   Positive 8 (42.1%)
   Negative 11 (57.9%)
Perineural involement  
   Positive 14 (73.7%)
   Negative 5 (26.3%)
Lymphovascular Space Involvement  
   Positive 13 (68.4%)
   Negative 6 (31.6%)
Lymph-node involvement2 Positive  
   Positive 11 (57.9%)
   Negative 8 (42.1%)
Pathology stage:  
Tumor stage  
   Stage II 1 (5.3%)
   Stage III 5 (26.3%)
   Stage IVA 13 (68.4%)
   Stage IVB 0
Primary Tumor stage  
   T1 0
   T2 6 (31.6%)
   T3 8 (42.1%)
   T4a 5 (26.3%)
   T4b 0
Regional Lymph Node stage  
   N0 5 (26.3%)
   N1 3 (15.8%)
   N2a 0
   N2b 8 (42.1%)
   N2c 3 (15.8%)
   N3 0
  1. Abbreviations:
  2. ECOG Performance Status = Eastern Cooperative Oncology Group Performance Status.