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Table 2 Tumor characteristics by margin status in incident tongue and larynx cancer cases

From: Surgical margins and survival after head and neck cancer surgery

  Negative Margins (N = 233) Positive Margins (N = 28) P*
  N % N %  
Tongue      
   Tumor size (cm)      
≤ 2 60 49.5 6 46.2  
>2 cm 34 28.2 5 38.5  
Missing 27 22.3 2 15.4  
   TNM Stage      
0 – I 66 54.5 2 15.4  
II 22 18.2 2 15.4  
III 17 14.1 2 15.4  
IV 14 11.6 7 53.8  
Missing 2 1.7 0 --  
Larynx      
   Tumor size (cm)      
≤ 2 23 20.5 2 13.3  
>2 cm 42 37.5 7 46.7  
Missing 47 42.0 6 40.0  
   TNM Stage      
0 – I 44 39.2 3 20.0  
II 12 10.7 1 6.7  
III 29 25.9 0 --  
IV 25 22.3 11 73.3  
Missing 2 1.8 0 --  
Overall      
   Primary site      
Tongue 121 51.9 13 46.4  
Larynx 112 48.1 15 53.6  
   Tumor size (cm)      
≤ 2 83 35.6 8 28.5 0.575
>2 cm 76 32.6 12 42.8  
Missing 74 31.7 8 28.5  
   TNM Stage      
0 – I 110 47.2 5 17.8 <0.0001
II 34 14.6 3 10.7  
III 46 19.7 2 0.7  
IV 39 16.7 18 64.2  
Missing 4 0.2 0 0  
  1. *P value based on chi-square distribution. Not calculated for the individual primary sites due to small cell size.