Liquen estriado: ¿una entidad clínico-patológica o una variante de liquen plano? Lichen striatus: A clinicopathologic entity or a variant of lichen. Resumen. —El liquen estriado es una dermatosis autolimitada, de etiología desconocida y que se presenta como una erupción de pápulas liquenoides. Version Info. Last reviewed on 10/24/; David L. Swanson, MD, Vice Chair of Medical Dermatology, Associate Professor of Dermatology, Mayo Medical.
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This dermatosis may appear in several clinical forms, which vary according to the morphology and distribution of lesions. In less than 0. This is a case report of a patient aged two years and eight months, who presented keratotic violaceous papules, affecting the abdomen, buttocks and right thigh, distributed along the lines of Blaschko.
Histopathological examination estriaod a diagnosis of linear lichen planus. Lichen planus is an inflammatory dermatosis that may appear in several clinical forms, which vary according to the morphology and distribution of the lesions.
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In certain cases, lesions are distributed in a linear manner, usually due to the Koebner phenomenon. Less commonly, lichen planus is characterized by linear luquen that follow the lines of Blaschko, denominated linear lichen planus, representing less than 0.
The report liqyen below aims to demonstrate an uncommon clinical variant of lichen planus, generally considered rare among pediatric age groups. A female patient aged two years and eight months, with a three-month history of asymptomatic lesions liquuen the abdominal region. Examination indicated multiple violaceous papules with hyperkeratosical surfaces, distributed along the lines of Blaschko on the abdominal region, buttocks and right thigh Figures 1 and 2.
No mucosal lesions or ungueal alterations were discovered. Hepatitis C serology was negative. Histopathological examination indicated vacuolar and lichenoid interface dermatitis with pigment incontinence, consistent with linear lichen planus Figures 3 and 4. Treatment was initiated with topical steroids, to which there was a good response, with persistent residual hyperchromic stains Figure 5. Lichen planus is an inflammatory dermatosis characterized by violaceous, scaly, polygonal papules involving the flexor aspects of the wrists, lower limbs and the etriado and oral mucosas.
Lesions generally clear up within a few months to years, leaving areas of hyperpigmentation.
It is believed that the pathogenesis is mediated by autoimmune T cells in response to viral agents, medication, allergens and even neoplasias. In a series of 87 pediatric patients with lichen planus, the classic form was most common, observed in 53 When cutaneous lesions are formed, they may either be randomly distributed or esrtiado patterns established during embryonic development. Linear lichen planus is an example of this phenomenon. Although lichen planus may occur in a liner pattern simply due to the Koebner phenomenon, the true linear form is more extensive and follows the lines of Blaschko, which are patterns of embryonic development.
Liquen estriado sistematizado bilateral | Actas Dermo-Sifiliográficas (English Edition)
The lines of Blaschko were first described in and ewtriado based on the distribution of congenital and acquired dermatoses observed on the skin. Lesions that follow the lines of Blascko characteristically present S-shaped lines on the abdomen, V-shaped lines along the posterior midline, linear patterns on the lower trunk and limbs and snake-like patterns on the scalp and face.
In histopathological examinations, linear lichen planus is identical to lichen planus, compact orthokeratosis, wedge-shaped hypergranulosis, irregular acanthosis with a estriaco appearance, vacuolar alteration of the basal cells and band-like dermal lymphocytic infiltrate in close proximity to the epidermis. The differential diagnosis for linear lichen planus is dermatoses, which are also distributed along the lines of Blaschko, especially lichen striatus, inflammatory linear verrucous epidermal nevus ILVENlinear psoriasis, Blaschkitis and linear Darier-White disease, all of which present histopathological diferences Chart 1.
One of the main differential diagnoses of this case report is ILVEN, due to the similarity of age group and clinical characteristics of the lesions. ILVEN is a linear pruriginous dermatosis, which consists of verrucous or hyperkeratotic liqyen that, unlike linear lichen planus, are generally present estriaro birth or appear liqueen childhood and do not regress spontaneously.
ILVEN is histologically similar to epidermal nevi with a lichenoid infiltrate. Blaschkitis is the acquired linear dermatosis most frequently encountered in adults. Clinically, it is similar to linear lichen planus but occurs in bouts and histological findings present spongiotic dermatites.
It is important to emphasize the rarity of the case presented in this report, since lichen planus represents an uncommon dermatosis in children, apart from which, linear presentation occurs in a minority of cases, with very few reports in the literature of unilateral multiple lesions.
Lichen planus in childhood: Unilateral multiple linear lichen planus following the Blaschko lines recurring after deliveries. Handa S, Sahoo B. What is the biological basis of pattern formation of skin lesions? Lichen planus in the lines of Blaschko.
Lever, histopatologia da pele. Lichen striatus and blaschkitis: This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Services on Demand Journal. Child; Dermatology; Lichen planus. Rio Branco, 39 How to cite this article.