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Table 3 Classification of 20 out of the 28 recurrences volumes using method CTV, TV and COM

From: Assessment and topographic characterization of locoregional recurrences in head and neck tumours

  Method In-field Marginal Outfield N
CTV-T (primary tumour) CTV 1 9 0 10
TV 8 2 0
COM 8 1 1
CTV-N (large adenopathies) CTV 0 3 0 3
TV 2 1 0
COM 3 0 0
CTV-N1 (high risk lymph nodes) CTV 1 4 0 5
TV 2 3 0
COM 2 3 0
CTV-N2 (low risk lymph nodes) CTV 0 2 0 2
TV 0 2 0
COM 1 1 0
  1. The remaining eight recurrences were classified as outfield by all evaluation methods.
  2. N is the number of cases in each category.