Korean J Dermatol.  2013 Nov;51(11):909-911.

A Case of Melanocytic Nevus Combined with an Vellus Hair Cyst

• Kang JH
• Kim M
• Cho BK
• Park HJ

Abstract

A nevus with cyst is defined as a single lesion of a melanocytic nevus, and this is commonly associated with an epidermal cyst. There have been rare reported cases of adnexal origin. The combination of nevus and cyst could possibly be misdiagnosed clinically as a malignant melanoma at initial examination. A 51-year-old woman presented with a painful, solitary, dome-shaped, erythemaous nodule on the forehead which had been present for several years. The histopathologic specimen of the nodule showed a solitary cyst with a melaocytic nevus. There were nevus cells without junctional activities in the upper dermis and melanin pigments in the upper dermal nevus nest. It contained lamellated keratin materials and vellus hair shafts. We report here a rare case of melanocytic nevus combined with an vellus hair cyst in a 51-year-old woman.

Keyword

Melanocytic nevus; Vellus hair cyst

MeSH Terms

Bone Cysts
Dermis
Epidermal Cyst
Erythema
Female
Forehead
Hair*
Humans
Melanins
Melanoma
Middle Aged
Nevus
Nevus, Pigmented*
Melanins