ABSTRACT
Monomorphous comma vessels are the hallmark of intradermal nevi. No further treatment is required only if the diagnosis of intradermal nevus can be made with high confidence. A special variant of an intradermal nevus, most common seen in the face, is the Miescher nevus. The main difference is that melanocytes involve mainly the papillary dermis in Unna nevi, whereas they widely penetrate the reticular dermis in Miescher nevi. About 30% of attendees of a recent screening campaign showed at least one intradermal nevus. Unna nevi typically present clinically as a soft exophytic papule with a diameter of about 5 mm. The predominant pattern of Unna nevi is the globular pattern. The homogenous pattern is second frequent seen in Unna nevi. Hypo/hyperpigmentation is characteristic for Unna nevi and lead sometimes to an asymmetric distribution of colors. An additional dermoscopic feature seen in some Miescher nevi is a golden brown halo.
