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Table 3 The lymph node recurrence (N, %) at respective level in patient with hypopharyngeal carcinoma treated by surgery with or without postoperative RT

From: Patterns of regional lymph node failure of locally advanced hypopharyngeal squamous cell carcinoma after first-line treatment with surgery and/or intensity-modulated radiotherapy

Nodal levelPostoperative RT
N = 40
Non postoperative RT
N = 6
Total
N = 46
P valueOdds ratio (95% CI)
iIb01 (16.7%)1 (2.2%)  
iII3 (7.5%)2 (33.3%)5 (10.9%)0.0580.162 (0.021–0.128)
iIII1 (2.5%)1 (16.7%)2 (4.3%)0.1130.128 (0.007–2.387)
iIV1 (2.5%)01 (2.2%)  
iVa1 (2.5%)01 (2.2%)  
iVIb2 (5.0%)2 (33.3%)4 (8.7%)0.0220.105 (0.011–0.964)
iVII3 (7.5%)2 (33.3%)5 (10.9%)0.0580.162 (0.021–0.128)
cII1 (2.5%)3 (50.0%)4 (8.7%)< 0.0010.026 (0.002–0.328)
cIII2 (5.0%)1 (16.7%)3 (6.5%)0.2800.263 (0.020–3.456)
cIV000  
cV000  
cVIb1 (2.5%)01 (2.2%)  
cVII1 (2.5%)01 (2.2%)  
  1. Note: i ipsilateral neck, c contralateral neck, RT Radiotherapy