Journal of Clinical Case Reports

Hidradenoma Papilliferum of the Caruncle

Abstract

Hind M Alkatan, Patricia Akaishi and Antonio AV Cruz

Hidradenoma papilliferum (HAP) is known since the nineteen century. The vast majority of cases occur on genital and perianal regions of women. Tumors found in other areas of the body are considered to be “ectopic”. The lacrimal caruncle is a vestigial skin structure with a diverse histology including hair. To our knowledge, the presence of HAP on the caruncle was referred only once in a series of cases published in a gynecological journal. We report for the first time in the ophthalmic literature a case of a caruncular hidradenoma papilliferum (HAP) as an unusual benign tumor of apocrinic differentiation.