Ann Dermatol.  2008 Dec;20(4):197-199. 10.5021/ad.2008.20.4.197.

A Case of Intradermal Melanocytic Nevus with Ossification (Nevus of Nanta)

• Lee YB
• Lee KH
• Park CJ

• KMID: 2156393
• DOI: http://doi.org/10.5021/ad.2008.20.4.197

Abstract

A 49-year-old woman presented with a 30-year history of asymptomatic plaque on her right temple. The histological examination revealed nests of nevus cells throughout the entire dermis. Bony spicules were seen just beneath the nevus cell nests in the lower dermis. Cutaneous ossification is an unusual event. Herein, we present a case of intradermal melanocytic nevus with unusual ossification (nevus of Nanta). To the best of our knowledge, this is the first such case report in the Korean literature.

Keyword

Melanocytic nevus; Ossification

MeSH Terms

Dermis
Female
Humans
Middle Aged
Nevus
Nevus, Pigmented

Figure

• 

  Fig. 1 A 1.5 cm in diameter, slightly erythematous to flesh colored, flat-topped hairy plaque on the right temple of the face.

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  Fig. 2 Nests of nevus cells were seen within the upper dermis, and bony spicules surrounding the mature fatty tissue were observed in the lower dermis, underneath the nevus cell nests (Hematoxylin-eosin, ×40).

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  Fig. 3 Bony spicules containing numerous osteocytes(Hematoxylin-eosin, ×100).

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