title: Infundibulocystic Squamous Cell Carcinoma.
abstract: Infundibulocystic squamous cell carcinoma was first reported in 2008 as a subset of squamous cell carcinoma arising from the infundibulum of the hair follicle and exhibiting infundibular differentiation. It has well-differentiated, less-differentiated, and infiltrative forms. It was thoroughly analyzed in a series of cases in 2011 by Misago et al. and has been redefined to include only the infiltrative form owing to its unique clinical and histological characteristics. Here, we report an interesting case of infundibulocystic squamous cell carcinoma in a 72-year-old man presenting with a mass on the left helix of the ear.
authors.affiliation: Department of Dermatology, Incheon St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Incheon, Korea.
authors.forename: So Min
authors.initials: SM
authors.lastname: Kim
authors.affiliation: Department of Dermatology, Incheon St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Incheon, Korea.
authors.forename: Hyeree
authors.initials: H
authors.lastname: Kim
authors.affiliation: Department of Dermatology, Incheon St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Incheon, Korea.
authors.forename: Hei Sung
authors.initials: HS
authors.lastname: Kim
authors.affiliation: Department of Dermatology, Incheon St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Incheon, Korea.
authors.forename: Sang Hyun
authors.initials: SH
authors.lastname: Cho
authors.affiliation: Department of Dermatology, Incheon St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Incheon, Korea.
authors.forename: Jeong Deuk
authors.initials: JD
authors.lastname: Lee
keywords: Squamous cell carcinoma