Second infield re-irradiation with a resulting cumulative equivalent dose (EQD2max ) of >180 Gy for patients with recurrent head and neck cancer

Head Neck. 2019 Apr;41(4):E48-E54. doi: 10.1002/hed.25428. Epub 2018 Dec 6.

Abstract

Background: For locally recurrent head and neck cancer, re-irradiation with modern techniques like stereotactic body radiotherapy is a promising, possibly curative alternative to palliative systemic therapy.

Methods: We report on 1 patient with nasopharyngeal carcinoma (NPC) and 1 patient with cutaneous squamous cell carcinoma (SCC). Both patients received full dose primary treatment (>66 Gy, EQD2), full dose re-irradiation (>50 Gy, EQD2), and a second course of re-irradiation via robotic radiosurgery (CyberKnife) for a second local recurrence.

Results: Both treatments resulted in adequate tumor response. No grade III-IV acute or late toxicities occurred. Follow-up at 6 months after third irradiation showed partial remission for the patient with NPC. In the second case (SCC), no toxicities occurred and the tumor was in remission 18 months after last treatment.

Conclusion: These cases show that a second course of re-irradiation utilizing modern techniques like robotic radiosurgery might be feasible for carefully selected patients with head and neck cancer.

Keywords: CyberKnife; SBRT; head and neck; re-irradiation; robotic radiosurgery.

Publication types

  • Case Reports
  • Review

MeSH terms

  • Aged, 80 and over
  • Carcinoma, Squamous Cell / diagnostic imaging
  • Carcinoma, Squamous Cell / pathology
  • Carcinoma, Squamous Cell / radiotherapy*
  • Dose-Response Relationship, Radiation
  • Epistaxis / diagnosis
  • Epistaxis / etiology
  • Follow-Up Studies
  • Head and Neck Neoplasms / diagnostic imaging
  • Head and Neck Neoplasms / radiotherapy*
  • Humans
  • Magnetic Resonance Imaging / methods
  • Male
  • Neoplasm Invasiveness / pathology
  • Neoplasm Recurrence, Local / diagnostic imaging
  • Neoplasm Recurrence, Local / radiotherapy*
  • Neoplasm Staging
  • Radiotherapy Dosage
  • Radiotherapy, Conformal / methods*
  • Re-Irradiation / methods*
  • Risk Assessment
  • Salvage Therapy / methods
  • Treatment Outcome