Korean J Dermatol.  2012 Aug;50(8):726-729.

A Case of a Trichilemmal Cyst of the Sole

Affiliations
  • 1Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea. gyongmoonkim@catholic.ac.kr

Abstract

Trichilemmal cyst is a common, benign, cutaneous tumor, which originates from the external root sheath. It usually occurs on the scalp of middle-aged women. It is rarely found on the face, neck, trunk and extremities. A 33-year-old male presented with a tender, skin-colored, hyperkeratotic, subcutaneous nodule on the right sole for 6 months, without any history of trauma. We clinically diagnosed this skin lesion as a callus. The histopathologic examination showed a well demarcated cystic mass that is lined by a stratified squamous epithelium, without granular layers, and is filled with eosinophilic, amorphous, and homogeneous keratins. The patient was diagnosed with a trichilemmal cyst. Herein, we report a case of trichilemmal cyst of unusual predilection site.

Keyword

Sole; Trichilemmal cyst

MeSH Terms

Adult
Bony Callus
Eosinophils
Epithelium
Extremities
Female
Humans
Keratins
Male
Neck
Scalp
Skin
Keratins
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