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Postbiopsy Pigmentation is Prognostic in Head and Neck Melanoma

  • Becky B. T. King
  • Brandon C. Chapman
  • Ana Gleisner
  • Camille Stewart
  • Chloe Friedman
  • Jennifer J. Kwak
  • Martin D. McCarter
  • Nicole KounalakisEmail author
Melanoma

Abstract

Purpose

To assess postbiopsy pigmentation (PBP) as a prognostic feature in patients with cutaneous head and neck (H&N) melanoma.

Methods

Retrospective review of patients undergoing sentinel lymph node biopsy (SLNB) for H&N melanoma (1998–2018). PBP was defined as visible remaining pigment at the scar or biopsy site that was documented on physical exam by both a medical oncologist and a surgeon at initial consultation. Variables associated with disease-free survival (DFS) and overall survival (OS) were analyzed using multivariable Cox proportional hazards models.

Results

Among 300 patients, 34.3% (n = 103) had PBP and 44.7% (n = 134) had microscopic residual disease on final pathology after wide local excision. Prognostic factors associated with DFS included advanced age, tumor depth, ulceration, PBP, and positive SLNB (p < 0.05). Patients with PBP fared worse than their counterparts without PBP in 5-year DFS [44.1% (31.1–56.3%) vs. 73.0% (64.1–80.0%); p < 0.001] and 5-year OS [65.0% (50.0–76.6%) vs. 83.6% (75.7–89.2%); p = 0.005]. After multivariable adjustment, PBP remained associated with shorter DFS [hazard ratio (HR) 1.72, 95% confidence interval (CI) 1.01–2.93; p = 0.047], but was not prognostic of OS.

Conclusions

In patients with H&N melanoma, PBP is associated with significantly shorter DFS. Patients with PBP may warrant greater consideration for SLNB and closer postoperative surveillance.

Notes

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Copyright information

© Society of Surgical Oncology 2019

Authors and Affiliations

  1. 1.Department of Surgery, Gastrointestinal Tumor and Endocrine SurgeryUniversity of Colorado School of MedicineAuroraUSA
  2. 2.Department of RadiologyUniversity of Colorado School of MedicineAuroraUSA

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