Citation
Ching L, Strong J, Lee T, Kaufman HL, Emerick KS, Kim EY, Patel VA, Brownell I, Singh K, Neel VA, Miller DM, Gupta S. A closer look: Evaluating Mohs surgery's role in the treatment of invasive melanoma of the head and neck. Journal of Cutaneous Oncology. 2024;2(1). doi:10.59449/joco.2024.01.24.
Why this question matters
Invasive melanoma of the head and neck presents a distinct surgical challenge. Standard margins may be difficult to accommodate around functionally and cosmetically sensitive structures, while incomplete margin assessment can complicate reconstruction and increase the risk of additional procedures.
Mohs micrographic surgery offers complete peripheral and deep margin assessment in real time, often aided by MART-1 immunohistochemistry. The central question is whether those technical advantages translate into oncologic outcomes that are at least comparable with conventional excision.
Mohs surgery is a compelling margin-control strategy for selected head and neck melanomas, especially when tissue preservation and immediate reconstruction matter. The available evidence is promising, but it remains retrospective and does not establish superiority—or even definitive equivalence—to conventional excision.
The featured study at a glance
Invasive head and neck melanomas
Treated with Mohs micrographic surgery using MART-1 immunohistochemical staining.
Low observed local failure
Approximately four local recurrences were reported across the full cohort.
Disease-specific survival
Outcomes were favorable, although most tumors were thin and the study lacked a matched comparator.
What the study supports
- Complete margin assessment with MART-1–assisted Mohs surgery is feasible for invasive melanoma.
- Observed local, nodal, and distant recurrence rates were low.
- Same-day confirmation of negative margins may simplify reconstructive planning.
- The findings were consistent across two participating clinical sites.
- The strongest inference applies to early invasive disease, because most tumors were 1 mm or thinner.
What remains uncertain
How does Mohs compare with conventional excision?
The study did not include a matched control group, staged-excision comparator, or randomized comparison.
How generalizable are the results?
Most tumors were thin, and outcomes from highly experienced centers may not transfer directly to all settings.
How should sentinel-node staging be integrated?
Sentinel lymph node biopsy was offered when appropriate, but its use and timing were not systematically reported.
What does implementation require?
Reliable frozen-section interpretation, MART-1 staining, melanoma-specific expertise, multidisciplinary coordination, and local procedural infrastructure are all necessary.
What the Journal Club revealed
Participants were more open to Mohs surgery for anatomically constrained head and neck melanoma than for a similar lesion on an extremity. Even so, most did not view the study as sufficient to support a broad change in practice.
- For a hypothetical scalp melanoma, one-quarter of clinicians favored Mohs surgery and three-quarters favored conventional excision.
- For an otherwise similar forearm melanoma, clinicians uniformly favored conventional excision.
- Only a minority felt the study alone justified a shift toward Mohs surgery for invasive melanoma.
- Most participants anticipated meaningful implementation barriers.
- Prospective comparative studies or carefully matched observational analyses were viewed as the next step.
Mohs surgery may be most compelling when the anatomy makes standard margins especially consequential and when experienced melanoma surgeons and dermatopathology support are available. For now, its use should remain selective, transparent, and grounded in multidisciplinary discussion.
Authors
Lauren Ching, Jennifer Strong, Truelian Lee, Howard L. Kaufman, Kevin S. Emerick, Emily Y. Kim, Vishal A. Patel, Isaac Brownell, Kritika Singh, Victor A. Neel, David M. Miller, and Sameer Gupta.