Abstract
Meyerson phenomenon denotes a perilesional, classically eczematous halo around a pre-existing lesion, most often melanocytic. Non-melanocytic halos are uncommon and can mimic regression in a melanocytic lesion, including melanoma, leading to urgent referrals. We report a 37-year-old woman with a "mole with a halo" on her arm. Examination revealed a 5-mm pink papule with a thin whitish collarette and a faint, ill-defined hypopigmented ring. Dermoscopy showed a structureless pink center with a pinpoint crust and delicate collarette, but no pigment network or organized vascular pattern. Excisional biopsy revealed a dermal spindle-cell proliferation characteristic of dermatofibroma; the diagnosis was confirmed by negative SOX10 and positive Factor XIIIa staining. Notably, there was no spongiotic perilesional dermatitis. A targeted literature review confirmed the rarity of halos around dermatofibromas, which are typically eczematous. Our case expands the clinicopathologic spectrum to include a hypopigmented, non-eczematous Meyerson-like (“forme-fruste”) halo variant and supports a dermoscopy-first approach to avoid over-triage to melanoma and help streamline care.
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- 2025
- Type
- article
- Pages
- 1-10
- Citations
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- Closed
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Cite This
Mohammed Shanshal,
Muna M. Abuayyash
(2025).
Dermatofibroma with hypopigmented Meyerson halo: case report and review of non-melanocytic hosts.
Case Reports in Dermatology
, 1-10.
https://doi.org/10.1159/000549986
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- DOI
- 10.1159/000549986