Onychoheterotopia: Pathogenesis, presentation, and management of ectopic nail

Riaz, Fauzia; Rashid, Rashid M.; Khachemoune, Amor

doi:10.1016/j.jaad.2009.11.018

Cited by 33 publications

(66 citation statements)

References 16 publications

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“…Congenital onychoheterotopia was reported in relationship to other congenital conditions such as congenital palmar nail syndrome and Pierre Robin syndrome. In addition, it has most often been observed on the palmar aspect of the hand [1]. The acquired variety of onychoheterotopia, as in our case, usually develops either after a single trauma or after chronic repetitive injuries, which lead to both splitting and implantation of the germinal matrix or heterotopic inoculation of the oncocytes [2].…”

Section: What Is Your Diagnosis?mentioning

confidence: 65%

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A Tale of a Double-Nailed Toe

Zaouak

Boufarguine

Fenniche

2018

Skin Appendage Disord

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Section: What Is Your Diagnosis?mentioning

confidence: 65%

“…Onychoheterotopia is an extremely rare condition in which the nail apparatus grows outside the normal nail unit of the foot or hand [1]. Its pathogenesis remains undetermined.…”

Section: What Is Your Diagnosis?mentioning

confidence: 99%

A Tale of a Double-Nailed Toe

Zaouak

Boufarguine

Fenniche

2018

Skin Appendage Disord

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“…Also known as onychoheterotopia, this is an extremely rare condition, although the pathogenesis remains undetermined [1]. This deformity was first reported by Ohya [2] in 1931 with the name of polyonychia congenita sine polydactylia.…”

Section: Introductionmentioning

confidence: 99%

Ectopic Foot Nails: Clinical and Dermoscopic Features, Treatment and Outcome in 20 Cases

Ena

Ena²,

Ferrari³

et al. 2015

Dermatology

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Background: Ectopic nail (EN) is an extremely rare condition in which the small nail apparatus grows outside the normal nail unit of the hand and fingertips. Limited data can be found in the literature regarding ectopic nails of the foot and toes (EFN). Objective: The study aimed at characterizing the clinical, therapeutic and dermoscopic EFN by a comparison with and differentiation from EN observed on the hands. Methods: Data on EFN collected during 2004-2014 were analysed. A literature search was performed to evaluate articles for review points on the topic. Results: Characteristics of shape, development, ultrasound aspects, dermoscopy and the response to treatment of 22 EFN were reported. Results from our study were compared with cases reported in the literature. Conclusion: In this article, new aspects on EFN from the clinical-morphological and dermoscopic points of view are reported; these may facilitate the diagnosis of an anomaly even without a histological examination.

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“…[1] It is defined as growth of nail tissue in any site other than the classical nail unit areas. [2] It is an extremely rare entity with about 55 published cases in the available literature, mostly from Japan, and only few from India. [3]…”

mentioning

confidence: 99%

“…Such cases occur predominantly over the dorsal aspect of the hand. [2] Feily, et al . Have reported a case of congenital ectopic nails, where the medial aspects of the index fingers were affected.…”

mentioning

confidence: 99%