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Table 2 Neck irradiation fields and failure patterns in 12 submandibular gland carcinoma patients who developed locoregional recurrence after postoperative radiotherapy

From: Nodal failure patterns and utility of elective nodal irradiation in submandibular gland carcinoma treated with postoperative radiotherapy - a multicenter experience

  1. Gray screentones: areas of neck irradiation. Frames: areas of nodal dissection
  2. Abbreviations: ACC adenoid cystic carcinoma, ENE extranodal extension, CXPA carcinoma ex pleomorphic adenoma, F site of failure, LVI lymphovascular invasion, M surgical margins, N pathologically involved nodal region, PNI perineurial invasion, pT pathological T stage, RP retropharyngeal nodal failure, SCC squamous cell carcinoma, SDC salivary duct carcinoma
  3. †, no elective neck dissection in cN0 patients; Perineural tumor recurrence at *hypoglossal nerve (Additional file 1: Figure S1B) and #facial and lingual nerves (Additional file 1: Figure S1A).