Comma Vessels — SCE Dermatology MCQ

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HardCutaneous InfectionComma VesselsSCE Dermatology

Dermoscopy of a stable, symmetrical intradermal naevus shows regularly distributed short curved vessels. Which vascular pattern is this?

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Correct answer: E — Comma vessels

Comma vessels are short curved vessels classically seen in dermal or intradermal melanocytic naevi. Their regular distribution in a symmetrical stable lesion supports benignity. Arborising vessels suggest basal-cell carcinoma, dotted vessels occur in psoriasis and some melanocytic lesions, and polymorphous atypical vessels raise concern for malignancy.

Reference: https://www.nice.org.uk/guidance/conditions-and-diseases/skin-conditions