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        "titulo" => "Abstract"
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Vol. 100. Issue 1.
Pages 65-68 (January - February 2009)
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Vol. 100. Issue 1.
Pages 65-68 (January - February 2009)
Case report
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Trichilemmal Horn: a New Case and Review of the Literature
Cuerno Tricolémico: Presentación De Un Nuevo Caso Y Revisión De La Literatura
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R. Haro
Corresponding author
rosharam@yahoo.es

Correspondence: Servicio de DermatologíaFundación Jiménez Díaz, Avda. Reyes Católicos, 2, 28040, Madrid, Spain.
, E. González-Guerra, M.C. Fariña, L. Martín-Moreno, L. Requena
Servicio de Dermatología, Fundación Jiménez Díaz, Madrid, Spain
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Abstract

Trichilemmal horn, or trichilemmal keratosis, is an uncommon benign neoplasm of follicular lineage with trichilemmal differentiation.

The essential characteristics of this tumor are its clinical presentation in the form of a cutaneous horn with trichilemmal keratinization apparent in the histology study (with a hyperplastic epithelium giving rise to dense, orthokeratotic eosinophilic keratin).

We present a new case of this type of tumor in an 82-year-old woman who developed a solitary lesion on her scalp after surgical removal of a trichilemmal cyst. On the basis of the pathology report, the tumor was diagnosed as trichilemmal horn.

We review the 33 reports of this tumor in the literature to date.

Key words:
trichilemmal horn
trichilemmal keratosis
follicular tumor
trichilemmal keratinization
Resumen

El cuerno tricolémico o queratosis tricolemal es una neoplasia benigna, poco frecuente, de estirpe folicular y diferenciación tricolémica.

Las características fundamentales de este tumor son su presentación clínica en forma de cuerno cutáneo que histológicamente muestra queratinización tricolémica (con un epitelio hiperplásico que da lugar a una queratina eosinófila, compacta y ortoqueratósica).

En este artículo presentamos un nuevo caso de este tumor en una paciente de 82 años que desarrolló una lesión solitaria en el cuero cabelludo, tras la manipulación de un quiste tricolémico. El estudio histológico permitió llegar al diagnóstico de cuerno tricolémico.

Realizamos una revisión de los 33 ejemplos de este tumor descritos en la literatura hasta la fecha.

Palabras clave:
cuerno tricolémico
queratosis tricolemal
tumor folicular
queratinización tricolémica
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References
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Quiste Tricolémico.
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Am J Surg Pathol, 26 (2002), pp. 789-794
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J Am Acad Dermatol, 39 (1998), pp. 368-371
Copyright © 2009. Academia Española de Dermatología y Venereología and Elsevier España, S.L.
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