title: Folliculosebaceous cystic hamartoma of the external auditory canal in an adult.
abstract: Folliculosebaceous cystic hamartoma (FSCH) is a cutaneous hamartoma of pilosebaceous origin that usually occurs on the face. We present what we believe is only the second reported case of FSCH of the external auditory canal, and the first in an adult. The patient was a 59-year-old woman who presented with a 4-year history of a firm nodule on the left external auditory canal that had caused hearing loss, pruritus, and pain. The lesion was excised, and histopathologic examination identified infundibular cysts, hyperplasia of the sebaceous lobules, and a large amount of mucin, features that are consistent with FSCH. One year postoperatively, the patient was asymptomatic, and no evidence of recurrence was noted.
authors.affiliation: Department of Pathology, University Hospital of Brasília, Brasília, Brazil. fabianapirani@hotmail.com
authors.forename: Fabiana Pirani
authors.initials: FP
authors.lastname: Carneiro
authors.forename: Leonora Maciel de Souza
authors.initials: LM
authors.lastname: Vianna
authors.forename: Aline Marques
authors.initials: AM
authors.lastname: dos Santos
authors.forename: Igor Teixeira
authors.initials: IT
authors.lastname: Raymundo
authors.forename: Ana Emília Borges
authors.initials: AE
authors.lastname: de Azevedo
mesh_terms: D004424:Ear Canal / Q000473:pathology*; D004428:Ear Neoplasms / Q000473:pathology* / Q000601:surgery; D005260:Female; D006222:Hamartoma / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008875:Middle Aged; D012626:Sebaceous Gland Neoplasms / Q000473:pathology* / Q000601:surgery