Ann Dermatol.  2008 Dec;20(4):230-232. 10.5021/ad.2008.20.4.230.

A Case of Steatocystoma Simplex Involving the Scalp

• Hyun DN
• Won JH
• Park JS
• Chung H

• KMID: 2156401
• DOI: http://doi.org/10.5021/ad.2008.20.4.230

Abstract

Steatocystoma is a benign adnexal tumor originating from the pilosebaceous duct junction which can be classified into two groups (steatocystoma simplex and steatocystoma multiplex). Steatocystoma simplex, which presents as a solitary lesion, is very rare. Steatocystoma simplex occurs most commonly on the face and the case reported herein involving the scalp is extremely rare. A 49-year-old man presented for evaluation and treatment of a solitary papule on the right parietal scalp which had persisted for a period of 1 year. The histopathologic examination revealed a thin-walled cyst consisting of stratified squamous epithelium with hyaline cuticle that lacked a stratum granulosum. Based on clinical and histologic findings, we diagnosed this case as steatocystoma simplex of the scalp and report this rare case.

Keyword

Scalp; Steatocystoma simplex

MeSH Terms

Epithelium
Humans
Hyalin
Methylmethacrylates
Middle Aged
Polystyrenes
Scalp
Methylmethacrylates
Polystyrenes

Figure

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  Fig. 1 A solitary, 0.9×0.9 cm skin-colored papule on the parietal scalp (arrow).

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  Fig. 2 (A) The cyst was located in the dermis and the cystic walls were thin and lined by stratified squamous epithelium (H&E, ×12.5). (B) Large, flattened sebaceous lobules were within the cystic wall. A hyalinized inner lining and lacking stratum granulosum were seen (H&E, ×100).

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