title: An Unusual Clinical Presentation of Eccrine Poroma Occurring on the Auricle.
abstract: Eccrine poromas are benign, slow-growing, solitary tumors originating from the intraepidermal portion of eccrine sweat ducts. Approximately 65% of these tumors occur on the soles of the feet, while 10% occur on the hands where a high concentration of eccrine sweat glands exists. Less frequently it occurs in other sites such as neck, chest, forehead, nose, and scalp with sporadic occurrences. A 43-year-old Korean female presented with a mass on her right auricle, which had been present for 5 years. The mass increased gradually in size with pain, oozing, and bleeding. A biopsy of the mass revealed monomorphic basaloid cells, which may extend into the underlying dermis, in a richly vascularized stroma, with a variable number of cystic or ductal structures. The patient was diagnosed as having eccrine poroma. In this case, the eccrine poroma showed unusual clinical presentation.
authors.affiliation: Department of Dermatology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.
authors.forename: Myong Il
authors.initials: MI
authors.lastname: Bae
authors.affiliation: Sahmyook Medical Center, Seoul, Republic of Korea.
authors.forename: Tae Ho
authors.initials: TH
authors.lastname: Cho
authors.affiliation: Department of Dermatology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.
authors.forename: Min Kyung
authors.initials: MK
authors.lastname: Shin
authors.affiliation: Department of Dermatology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.
authors.forename: Ki Heon
authors.initials: KH
authors.lastname: Jeong
keywords: Auricle; ear; eccrine poroma