Perianal and perineal keratoacanthoma: Two cases demonstrating histologic similarity to subungual keratoacanthoma

Nathan Paulson; Joanna Gibson; Earl Glusac

doi:10.1111/cup.13518

Perianal and perineal keratoacanthoma: Two cases demonstrating histologic similarity to subungual keratoacanthoma

J Cutan Pathol. 2019 Oct;46(10):794-797. doi: 10.1111/cup.13518. Epub 2019 Jun 27.

Authors

Nathan Paulson¹, Joanna Gibson¹, Earl Glusac^{1

2}

Affiliations

¹ Department of Pathology, Yale School of Medicine, New Haven, Connecticut.
² Department of Dermatology, Yale School of Medicine, New Haven, Connecticut.

PMID: 31148238
DOI: 10.1111/cup.13518

Abstract

Perianal keratoacanthomas are rare, with 10 cases reported to date. Perineal keratoacanthoma has not previously been described. In this report, we describe two cases of keratoacanthoma, one perianal and one perineal. Both lesions show prominent dyskeratotic keratinocytes, with striking and curious histologic resemblance to subungual keratoacanthoma.

Keywords: Keratoacanthoma; perianal; perineal; subungual.

Publication types

Case Reports

MeSH terms

Aged
Anal Canal* / metabolism
Anal Canal* / pathology
Diagnosis, Differential
Female
Humans
Keratoacanthoma* / diagnosis
Keratoacanthoma* / metabolism
Keratoacanthoma* / pathology
Male
Nail Diseases* / diagnosis
Nail Diseases* / metabolism
Nail Diseases* / pathology