Korean J Dermatol.
2008 Jul;46(7):955-957.
A Case of Pilar Sheath Acanthoma which Originated from Outer Root Sheath
- Affiliations
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- 1Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea. kkj51818@hanmail.net
Abstract
- Pilar sheath acanthoma is a rare, benign follicular hamartoma commonly affecting middle-aged and elderly individuals. It is characterized by a small, solitary, skin-colored papule situated on the head and neck, particularly around the upper lip. The lesion shares some features with trichofolliculoma and dilated pore of Winer, so it should be differentiated from these. Cytokeratin (CK) is a useful marker for studying the origin of epithelial tumors. We report a case of pilar sheath acanthoma which originated from outer root sheath using CK.
