title: Clear cell hidradenocarcinoma of the ear helix: report of primary ear helix adnexal carcinoma with regional lymph node metastasis.
abstract: Clear cell hidradenocarcinoma is a rare tumor of eccrine sweat gland origin that has a predilection for the head and neck. It has an indolent growth pattern and a higher incidence of regional and distant metastases. Metastasizing adnexal carcinomas are rare; thus, currently there is no uniform treatment guideline. We report a case of an 89-year-old female patient with clear cell hidradenocarcinoma manifesting in the right ear helix that metastasized to the right parotid gland who was treated by wide local excision and radiation therapy.
authors.affiliation: From the Departments of *Plastic and Reconstructive Surgery and †Pathology, Chung-Ang University Hospital, Seoul, Korea.
authors.forename: Tae Hui
authors.initials: TH
authors.lastname: Bae
authors.forename: Shin Hyuk
authors.initials: SH
authors.lastname: Kang
authors.forename: Han Koo
authors.initials: HK
authors.lastname: Kim
authors.forename: Woo Seob
authors.initials: WS
authors.lastname: Kim
authors.forename: Mi Kyung
authors.initials: MK
authors.lastname: Kim
mesh_terms: D018250:Acrospiroma / Q000473:pathology*; D018262:Adenocarcinoma, Clear Cell / Q000473:pathology*; D000369:Aged, 80 and over; D054644:Ear Auricle; D004428:Ear Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D008207:Lymphatic Metastasis; D010307:Parotid Neoplasms / Q000556:secondary; D013544:Sweat Gland Neoplasms / Q000473:pathology*