title: Eruptive vellus hair cyst and epidermoid cyst in a patient with pachyonychia congenita.
abstract: We report the first case of pachyonychia congenita (PC) associated with both eruptive vellus hair cyst (EVHC) and epidermoid cyst. The patient is a 12-year-old Japanese girl who presented with two natal teeth at birth. She had thickening and discoloration of the fingernails and toenails, plantar hyperkeratosis, palmar-plantar hyperhidrosis and multiple cutaneous cysts. Histologic examination revealed EVHC and epidermoid cyst.
authors.affiliation: Division of Dermatology, Saga Prefectural Hospital, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Takeshita
authors.forename: H
authors.initials: H
authors.lastname: Takeshita
authors.forename: K
authors.initials: K
authors.lastname: Irie
mesh_terms: D001365:Axilla; D002648:Child; D003937:Diagnosis, Differential; D004476:Ectodermal Dysplasia / Q000150:complications*; D004814:Epidermal Cyst / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D005497:Follicular Cyst / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D009260:Nail Diseases / Q000150:complications* / Q000151:congenital / Q000473:pathology; D012871:Skin Diseases / Q000150:complications / Q000175:diagnosis* / Q000473:pathology