Subungual onycholemmal cyst of the toenail mimicking subungual melanoma.
Publication/Presentation Date
8-1-2016
Abstract
This report highlights a rare case of a woman with horizontal ridging and tenderness of the right great toenail associated with dyspigmentation of 5 years' duration. Histopathology revealed a cystic structure with an epithelial lining mostly reminiscent of an isthmus-catagen cyst admixed with the presence of both an intermittent, focal granular layer and an eosinophilic cuticle surrounding pink, laminated keratin, most consistent with a diagnosis of subungual onycholemmal cyst (SOC). It is a rare and distinctive nail abnormality occurring in the dermis of the nail bed. We present a case of an SOC in the toenail mimicking subungual malignant melanoma, which may be an underrecognized and common entity that must be considered when discussing tumors of the nail unit, especially subungual melanoma.
Volume
98
Issue
2
First Page
107
Last Page
110
ISSN
2326-6929
Published In/Presented At
Busquets, J., Banala, M., Campanelli, C., Sahu, J., & Lee, J. B. (2016). Subungual onycholemmal cyst of the toenail mimicking subungual melanoma. Cutis, 98(2), 107–110.
Disciplines
Medicine and Health Sciences
PubMedID
27622253
Department(s)
Department of Pathology and Laboratory Medicine
Document Type
Article