PMID: 9436838Jan 22, 1998Paper

Hair follicle nevi and accessory tragi: variable quantity of adipose tissue in connective tissue framework

Pediatric Dermatology
M BanY Kitajima

Abstract

Controversy exists about the histologic differences between hair follicle nevi and accessory tragi. We examined 10 congenital lesions histologically, possible diagnoses of which were hair follicle nevi or accessory tragi. Two specimens out of the 10 had tiny, mature hair follicles surrounded by thick fibrous root sheaths, a few fat cells, and no cartilage. The subcutaneous fat cells of their bases were segmented by a connective tissue framework. They had histologic features of hair follicle nevi. One specimen had cartilage and abundant fat cells with a connective tissue framework in the nodule, as well as a conglomeration of numerous well-differentiated hair follicles. It possessed both elements of a hair follicle nevus and an accessory tragus. Seven specimens had abundant subcutaneous fat and showed a prominent connective tissue framework. These were typical accessory tragi. The present study suggests that the number of fat cells in the nodule or papule differs between these two conditions. All the lesions studied revealed a connective tissue framework in the subcutaneous fat. Histologic features of both hair follicle nevi and accessory tragi can coexist in a single lesion. Hair follicle nevi may represent incomplete accessory...Continue Reading

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Citations

Nov 21, 2000·Pediatric Dermatology·T JansenP Altmeyer
Oct 26, 2007·Pediatric Dermatology·Annalisa PatriziIria Neri
Feb 29, 2008·Pediatric Dermatology·Sei-ichiro MotegiOsamu Ishikawa
Nov 6, 2009·Actas dermo-sifiliográficas·C Serra-GuillénA Martorell
Sep 17, 2015·Anais Brasileiros De Dermatologia·Yasemin Yuyucu KarabulutYasemin Dölek
Mar 22, 2005·Ophthalmic Plastic and Reconstructive Surgery·Douglas R CasadyDale R Meyer
Sep 15, 2018·The Australasian Journal of Dermatology·Hayriye SaricaogluCuyan Demirkesen
Dec 15, 2017·The Journal of Craniofacial Surgery·Sasan Amirhassankhani, Mark S Lloyd
Oct 9, 2019·Journal of Audiology & Otology·Jeong Hwan Choi
Feb 5, 2016·The American Journal of Dermatopathology·Priyadharsini NagarajanSara B Peters
Jun 9, 2020·European Journal of Pediatric Surgery : Official Journal of Austrian Association of Pediatric Surgery ... [et Al] = Zeitschrift Für Kinderchirurgie·Fabrizio SchonauerFrancesco D'Andrea

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