Pinna :: Nevi and Melanoma :: 1_117_L
 Nevi and Melanoma  
Intradermal Nevus

Intradermal Nevus

Description : Intradermal nevi are raised above the level of the surrounding skin. They are either dome-shaped or pedunculated and may contain hair. Intradermal nevi are frequently skin-colored but they may be pigmented. Histologically, the nevus cells of an intradermal nevus are located exclusively within the dermis, and are arranged in groups, nests, or strands. The nevus cells are uniform in appearance and become smaller and more mature in the deeper layers. A zone of uninvolved dermis (the Grenz zone) frequently separates the epidermis from the group of underlying nevus cells.

On the left, the pigmented, dome shaped lesion above the upper border of the tragus is an intradermal nevus.

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