title: Olmsted syndrome: report of a case with study of the cellular proliferation in keratoderma.
abstract: Olmsted syndrome is a rare disorder that consists of sharply marginated keratoderma of the palms and soles, constriction of digits and toes that may result in spontaneous amputation of the distal phalanges, hyperkeratotic plaques around the body orifices, onychodystrophy, and other less common cutaneous and extracutaneous anomalies. Although some patients had other affected family members, most cases of Olmsted syndrome seem to be of sporadic occurrence. We describe a patient with the characteristic features of Olmsted syndrome. The symptoms consisted of diffuse transgrediens palmoplantar keratoderma and keratotic plaques around the mouth and nose. Our patient also had the associated anomalies of hyperhidrosis of the palms and soles and congenital deaf-mutism. Histopathologic study of the keratoderma demonstrated epidermal hyperplasia with acanthosis, papillomatosis, and orthokeratotic hyperkeratosis. Immunohistochemical study showed more basal and suprabasal keratinocytes of the epidermis with immunoreactivity for Ki-67 marker when compared with the keratinocytes of the epidermis of the adjacent non-involved skin. These results support the notion that Olmsted syndrome is a hyperproliferative disorder of the epidermis.
authors.affiliation: Department of Dermatology, Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain. lrequena@fjd.es
authors.forename: L
authors.initials: L
authors.lastname: Requena
authors.forename: F
authors.initials: F
authors.lastname: Manzarbeitia
authors.forename: C
authors.initials: C
authors.lastname: Moreno
authors.forename: M J
authors.initials: MJ
authors.lastname: Izquierdo
authors.forename: M A
authors.initials: MA
authors.lastname: Pastor
authors.forename: L
authors.initials: L
authors.lastname: Carrasco
authors.forename: M C
authors.initials: MC
authors.lastname: Fariña
authors.forename: L
authors.initials: L
authors.lastname: Martín
mesh_terms: D000328:Adult; D003638:Deafness; D005148:Facial Dermatoses / Q000473:pathology; D006801:Humans; D007150:Immunohistochemistry; D007645:Keratoderma, Palmoplantar / Q000378:metabolism / Q000473:pathology*; D007642:Keratosis / Q000473:pathology; D019394:Ki-67 Antigen / Q000032:analysis; D008297:Male; D012867:Skin / Q000737:chemistry / Q000473:pathology; D013577:Syndrome
chemical_list: D019394:Ki-67 Antigen