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Article
March 1987

Eruptive Vellus Hair Cyst With Singular Histologic Finding

Author Affiliations

Department of Dermatology Universidad, Complutense de Madrid Hospital Clínico de San Carlos Madrid, Spain

Arch Dermatol. 1987;123(3):299-301. doi:10.1001/archderm.1987.01660270031009
Abstract

To the Editor.—  Eruptive vellus hair cysts (EVHCs) were first reported by Esterly et al in 1977.1 Since then, several cases have been described, two of them involving familial affectation, which suggests an apparent autosomal dominant inheritance.2,3Although clinical findings may be variable in age of onset, localization, and evolution, histologic studies are distinctive, consisting in all cases of a small cyst located in the midcorium with a wall composed of several layers of squamous cells and a cavity containing laminated and amorphous keratinous material and vellus hairs. Occasionally, the cysts are in continuity with hair follicles1,4,5 or arrector pili muscles,1,2 and, in some cases, one or more sebaceous glands were seen near the cyst.6,7We describe herein a case of EVHC with sebaceous glands within the cyst wall, similar to those seen in steatocystoma.

Report of a Case.—  A 22-year-old woman was examined for

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