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Article
December 1995

Trichogenic Tumors

Author Affiliations

Landeskrankenanstalten Salzburg Dermatologische Abteilung Mullner Hauptstraβe 48 A-5020 Salzburg, Austria

Arch Dermatol. 1995;131(12):1464. doi:10.1001/archderm.1995.01690240130027
Abstract

We read with surprise the article by Altman et al1 in the February 1995 issue of the Archives in which the authors use the term trichoblastic fibroma.

Discussion about the nomenclature of benign, trichogenic tumors consisting mostly of follicular germinative cells with pale, fibrocytic stroma began in 1976 when Headington along with Prenoh2-4 classified trichogenic tumors into four types; one type was termed trichoblastic fibroma.

In 1988, Long et al5 described what they called immature trichoepithelioma, again a benign, trichogenic tumor consisting of basaloid follicular germinative cells, occasionally with induction of germs and papillae and scant, fibrocytic stroma.

A discussion in the literature followed until 1993 when Ackerman6 in his book on follicular neoplasm gave a distinct description of trichoblastoma. He states that ''trichoblastoma is inclusive for all benign neoplasms that consisting of follicular germinative cells.'' There are several variants of trichoblastoma.

Altman and colleagues describe

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