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Practical Dermoscopy
Millimetric Papule on the Antihelix Dermoscopically Constituted by Hairpin Vessels in a Radial Pattern
Pápula milimétrica en antehélix constituida dermatoscópicamente por corona de vasos en horquilla
A. Martin-Gorgojoa,
Autor para correspondencia
alejandromartingorgojo@aedv.es

Corresponding author.
, F.J. Bru-Gorraiza, E. Pascual-Rodríguezb
a Sección de Especialidades Médicas, Servicio de ITS/Dermatología, Ayuntamiento de Madrid, Madrid, Spain
b Sección de Especialidades Médicas, Servicio de Anatomía Patológica, Ayuntamiento de Madrid, Madrid, Spain
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        "titulo" => "P&#225;pula milim&#233;trica en anteh&#233;lix constituida dermatosc&#243;picamente por corona de vasos en horquilla"
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          "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">A&#44; Clinical presentation of the lesion on the right antihelix&#46; B&#44; Dermoscopic image of the lesion using contact dermoscopy and 60&#215; magnification &#40;image acquisition was very difficult given the very small size of the lesion&#41;&#46; Slightly whiteish central area without structure &#40;&#42;&#41; and radially distributed hairpin vessels &#40;&#94;&#41;&#46;</p>"
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    "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Case description</span><p id="par0005" class="elsevierStylePara elsevierViewall">A 72-year-old woman with a history of nonmelanoma skin cancer visited our department for a skin check-up&#46; On inspection&#44; the only finding of note was a lesion on the right antihelix&#44; which had appeared an unknown length of time earlier&#46; The lesion was a slightly erythematous millimetric papule &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#46; No other similar lesions were found on the rest of the skin surface&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Diagnosis</span><p id="par0010" class="elsevierStylePara elsevierViewall">Trichilemmoma or tricholemmoma &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#41;&#46;</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect1015">Comment</span><p id="par0015" class="elsevierStylePara elsevierViewall">Dermoscopy revealed hairpin vessels in a radial distribution around the periphery of the lesion&#44; with an unstructured whiteish central area with an appearance reminiscent of an ostium&#46; An excision biopsy of the lesion made it possible to reach a diagnosis of trichilemmoma&#44; with some findings that supported the dermoscopic and histologic correlation &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#41;&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">Trichilemmoma is a benign follicular tumor that is most commonly found on the central facial area&#44; although it may be located on any part of the skin&#44; except glabrous skin&#46; Solitary trichilemmomas are common in adulthood&#44; show no predominance by sex&#44; and are asymptomatic&#46; Different dermoscopic findings have been reported or this entity&#44; including whiteish perivascular halos&#44;<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> red iris-like structures&#44; and occasionally&#44; a hyperpigmented halo&#46;<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a></p><p id="par0025" class="elsevierStylePara elsevierViewall">If it presents in multiple form&#44; a diagnosis of Cowden syndrome should be considered&#46; If it presents in solitary form&#44; as in our case&#44; clinical diagnosis is practically impossible&#46; For this reason&#44; we believe that dermoscopy allows for a more approximate differential diagnosis&#44; even in such incipient lesions as that of our patient&#46; Nevertheless&#44; the differential diagnosis&#44; given the clinical and dermoscopic findings&#44; should be established with other lesions such as an incipient keratoacanthoma or a cystic lesion such as an epidermal inclusion cyst&#46;</p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Conflicts of interest</span><p id="par0030" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflicts of interest&#46;</p></span></span>"
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          "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Histopathology findings of the fully excised lesion&#46; Of note is the presence of at least one hyperplasic infundibulum with an epithelium reminiscent of that of the external root sheath of the hair follicle&#44; with hypergranulosis and parakeratosis&#44; consisting of clear monomorphic cells with a pale eosinophilic cytoplasm &#40;due to the presence of glycogen&#41; and a small nucleus&#46; A&#44; General view&#46; B&#44; PAS staining showing the glycogen of the cells that constitute the benign tumor&#46; C&#44; Detailed image with histology-dermoscopy correlation of the parakeratosis &#40;&#42;&#41; and vessels surrounding the lesion &#40;&#94;&#41;&#46;</p>"
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                      "titulo" => "Dermoscopy of uncommon skin tumours"
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                        0 => array:2 [
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                          "autores" => array:6 [
                            0 => "A&#46; Lallas"
                            1 => "E&#46; Moscarella"
                            2 => "G&#46; Argenziano"
                            3 => "C&#46; Longo"
                            4 => "Z&#46; Apalla"
                            5 => "G&#46; Ferrara"
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                      "doi" => "10.1111/ajd.12074"
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                        "tituloSerie" => "Australas J Dermatol"
                        "fecha" => "2014"
                        "volumen" => "55"
                        "paginaInicial" => "53"
                        "paginaFinal" => "62"
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                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/23866027"
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                      "titulo" => "Dermoscopic pattern in facial trichilemmomas&#58; red iris-like structure"
                      "autores" => array:1 [
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                          "etal" => true
                          "autores" => array:6 [
                            0 => "C&#46; Horcajada-Reales"
                            1 => "J&#46;A&#46; Aviles-Izquierdo"
                            2 => "C&#46; Ciudad-Blanco"
                            3 => "E&#46; Conde-Montero"
                            4 => "V&#46; Parra-Blanco"
                            5 => "P&#46; L&#225;zaro-Ochaita"
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                    0 => array:2 [
                      "doi" => "10.1016/j.jaad.2014.04.064"
                      "Revista" => array:6 [
                        "tituloSerie" => "J Am Acad Dermatol"
                        "fecha" => "2015"
                        "volumen" => "72"
                        "paginaInicial" => "S30"
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