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Table 1 Clinical Pathological characteristics of studied population.

From: Smad2 and Smad6 as predictors of overall survival in oral squamous cell carcinoma patients

  Oral Cavity Larynx Oropharynx Hypopharynx total
Lymph node status      
   pN0 23 11 2 2 38
   pN+ 25 10 8 2 45
Tumor size      
   pT1/T2 17 4 1 0 22
   pT3/T4 31 17 9 4 61
Clinical Staging      
   I/II 13 4 0 0 17
   III/IV 35 17 10 4 66
total 48 21 10 4 83
  1. Oral cavity: 25 mouth floor, 5 lower gum, 5 retromolar area, 10 tongue border, 1 hard palate, 1 tongue ventricular surface, 1 mouth anterior floor; Larynx: 6 aryepiglottic folds, 10 vocal cords, 3 epiglottis, 2 false cord; and Oropharynx: 2 glossotonsilar sulch, 6 tonsil, 1 soft palate, 1 vallecula. All 4 Hypopharynx tumors were from pyriform sinus.