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What Is the Role of Adjuvant Radiotherapy in Head and Neck Melanoma in the Era of Systemic Therapy?

by Jobran Mansour, MD, Ameya Asarkar, MD, John Pang, MD, and Cherie-Ann O. Nathan, MD • September 30, 2022

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TRIO Best Practice

TRIO Best Practice articles are brief, structured reviews designed to provide the busy clinician with a handy outline and reference for day-to-day clinical decision making. The ENTtoday summaries below include the Background and Best Practice sections of the original article. To view the complete Laryngoscope articles free of charge, visit Laryngoscope.

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Explore This Issue
September 2022

BACKGROUND

Stage III melanoma encompasses a heterogenous group of patients with significant differences in locoregional recurrence risk, prognosis, and survival. Stage IIIA melanoma patients present with minimal metastatic burden, identified by sentinel lymph node biopsy, and have favorable outcomes compared to stage IIIB patients with clinical regional disease. Locoregional failure rates ranging from 30% to 50% have been reported when high-risk (HR) clinicopathologic features are present.

Prior to the approval of systemic, therapy in stage III melanoma, studies recommended adjuvant radiation therapy (RT) for patients with extranodal extension, lymph nodes larger than 3 cm, involvement of multiple lymph nodes, recurrent disease, or any patient having undergone a therapeutic neck dissection (Cancer. 2003;97:1789-1796). Adjuvant RT for HR cutaneous melanoma was shown to improve locoregional recurrence, but it failed to improve recurrence-free survival and overall survival.

The majority of the studies that investigated the benefit of RT on local and regional control in stage III melanoma were conducted prior to the era of an effective adjuvant systemic immune checkpoint inhibitor (ICI) and targeted therapy. The role of adjuvant radiotherapy in the era of modern systemic therapies is unclear.

BEST PRACTICE

In the era of effective adjuvant systemic therapies, the use of ICI alone in the adjuvant setting may be insufficient to effectively reduce regional failure. Adjuvant RT may still have a significant value in improving regional control in stage III melanoma. Future studies should focus on whether select patient populations benefit from combination therapy.

Filed Under: Head and Neck, Head and Neck, Practice Focus, TRIO Best Practices Tagged With: head and neck cancer, treatmentIssue: September 2022

You Might Also Like:

  • What Is the Role of Adjuvant Radiotherapy in Head and Neck Melanoma in the Era of Systemic Therapy?
  • Should Neck Dissection Be Done after Positive Sentinel Node Biopsy for Head and Neck Melanoma?
  • Blue, Green, or Radioisotope: Which Modality Is Best for Head and Neck Melanoma SLN Identification?
  • Elective Neck Dissection Does Not Improve Survival Rate but May Have Prognostic Role in Oral Cavity Mucosal Melanoma

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