title: Dermatoscopy of folliculosebaceous cystic hamartoma.
abstract: A 29-year-old Japanese man presented to our institution with a nodule on his nose that had increased in size since childhood. Physical examination indicated the presence of an elastic, firm, pedunculated red nodule measuring 15 mm in size. Dermatoscopic examination of the nodule indicated a yellowish-white network, yellowish-orange dots/globules at its center, and a pinkish-white structureless peripheral area. Histopathological examination of an excisional biopsy specimen showed a dilated infundibulocystic structure with sebaceous lobules proliferating radially, surrounded by fibrous stroma. Moreover, mature adipocytes and small vessels were noted in the stroma. Based on these histopatho-logic findings, the patient was diagnosed with folliculosebaceous cystic hamartoma.
authors.affiliation: Division of Dermatology, Kawasaki Municipal Hospital, Kawasaki, Japan.
authors.forename: Emiko
authors.initials: E
authors.lastname: Watanabe-Okada
authors.affiliation: Division of Dermatology, Kawasaki Municipal Hospital, Kawasaki, Japan.
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Kurihara
authors.affiliation: Division of Dermatology, Kawasaki Municipal Hospital, Kawasaki, Japan.
authors.forename: Shunichi
authors.initials: S
authors.lastname: Miyakawa
authors.affiliation: Department of Dermatology, Tokyo Women's Medical University Medical Center East, Tokyo, Japan.
authors.forename: Masaru
authors.initials: M
authors.lastname: Tanaka
keywords: dermatoscopy; folliculosebaceous cystic hamartoma; sebaceous trichofolliculoma; yellowish-orange dots/globules; yellowish-white network