title: Ectopic hidradenoma papilliferum.
abstract: Hidradenoma papilliferum is a rare tumor that occurs almost exclusively in females on the anogenital area. Rare cases of ectopic (nongenital) hidradenoma papilliferum have been described. The lesions usually present as an asymptomatic slow-growing, red, firm, mobile, well-delimitated nodule that grows for a long time before resection. We describe a case of an 26-year-old man that presented with an enlarging nodule on his right eyelid. The histological findings revealed a hidradenoma papilliferum. So far, among the very few reports of ectopic hidradenoma papilliferum, only a very small number were localized to the eyelid.
authors.affiliation: Departamento de Dermatologia, Centro Hospitalar do Porto, HSA, Edifício das Consultas Externas, Ex-CICAP, Rua D. Manuel II, 4099-001 Porto, Portugal.
authors.forename: Aristóteles David Neiva
authors.initials: AD
authors.lastname: Rosmaninho
authors.forename: Maria Teresa Duarte Pinto
authors.initials: MT
authors.lastname: de Almeida
authors.forename: Vírgilio
authors.initials: V
authors.lastname: Costa
authors.forename: Maria Madalena Vasconcelos
authors.initials: MM
authors.lastname: Sanches
authors.forename: Carlos
authors.initials: C
authors.lastname: Lopes
authors.forename: Maria Manuela
authors.initials: MM
authors.lastname: Selores Gomes Meirinhos