title: Onychomatricoma: A Rare Tumor of Nail Matrix.
abstract: Onychomatricoma is a rare tumor of the nail matrix. Until now, few cases of onychomatricoma have been reported in the literature. Immunohistochemically, CD10, a marker of the onychodermis, is expressed in the stroma of the onychomatricoma. In the present case, a 27-year-old woman presented with an 8-year history of a yellowish, thickened, and overcurved nail plate of the right index finger, mimicking onychomycosis. She had been treated for 4 years with antifungal agents by general physicians, without improvement. The nail was surgically removed, and the tumor at the nail matrix was excised. The nail plate continued to grow in the 2 months after the excision. This is a case of onychomatricoma in South Korea, which was initially misdiagnosed as onychomycosis. In addition, we present a review of the literature regarding clinical, sonographic, and histological features, differential diagnoses, and treatment of onychomatricoma.
authors.affiliation: Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea.
authors.forename: Hong Jin
authors.initials: HJ
authors.lastname: Joo
authors.affiliation: Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea.
authors.forename: Mi Ri
authors.initials: MR
authors.lastname: Kim
authors.affiliation: Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea.
authors.forename: Baik Kee
authors.initials: BK
authors.lastname: Cho
authors.affiliation: Department of Plastic and Reconstructive Surgery, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
authors.forename: Gyeol
authors.initials: G
authors.lastname: Yoo
authors.affiliation: Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea.
authors.forename: Hyun Jeong
authors.initials: HJ
authors.lastname: Park
keywords: Onychomatricoma; Onychomycosis