<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0034-7507</journal-id>
<journal-title><![CDATA[Revista Cubana de Estomatología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cubana Estomatol]]></abbrev-journal-title>
<issn>0034-7507</issn>
<publisher>
<publisher-name><![CDATA[Editorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0034-75072021000300011</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Liquen plano pigmentoso en la cavidad oral]]></article-title>
<article-title xml:lang="en"><![CDATA[Lichen planus pigmentosus in oral cavity]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pinho Valente Pires]]></surname>
<given-names><![CDATA[Alessandra Laís]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Daltro Borges Alves]]></surname>
<given-names><![CDATA[Lísia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de Carvalho Freitas Ramos]]></surname>
<given-names><![CDATA[Tarsila]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Souza Freitas]]></surname>
<given-names><![CDATA[Valéria]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campos de Oliveira]]></surname>
<given-names><![CDATA[Márcio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Estadual de Feira de Santana Departamiento de Salud ]]></institution>
<addr-line><![CDATA[Feira de Santana Bahia]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<volume>58</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0034-75072021000300011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0034-75072021000300011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0034-75072021000300011&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  El liquen plano pigmentoso es una lesión autoinmune de etiología desconocida, aunque tiene mayor incidencia en mujeres de mediana edad, a las que afecta principalmente la cara y el cuello y, en menor medida, la cavidad oral.  Objetivo:  Describir las características clínicas e histopatológicas de un caso de liquen plano pigmentoso en la cavidad oral.  Presentación del caso:  Mujer de 21 años, negra, que acudió al servicio quejándose de una mancha en la cavidad oral. Las lesiones presentaban un mes de evolución, crecimiento radial y sin síntomas dolorosos. Consistían en placas ennegrecidas de contorno regular con estrías blanquecinas en su periferia, forma redondeada, bordes afilados, en mucosa yugal bilateral, que medían aproximadamente 25 mm en el derecho y 13 mm en el lado izquierdo. Después de la biopsia incisional y el análisis histopatológico, se confirmó la sospecha de liquen plano pigmentoso oral. El tratamiento propuesto para las lesiones fue conservador mediante un estricto seguimiento clínico.  Conclusiones:  El diagnóstico del liquen plano pigmentoso, debido a su baja ocurrencia en la cavidad oral y sus características clínicas atípicas y semejantes a otras lesiones orales, es complejo. En este contexto, se ratifica la relevancia del examen histopatológico y se destaca la necesidad de otros estudios para aclarar los factores etiológicos involucrados en esta lesión.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Pigment lichen planus is an autoimmune lesion of unknown etiology, with preference for middle-aged women, which mainly affects the face and neck, being rare in the oral cavity.  Objective:  To report a case of pigment lichen planus in the oral cavity, with emphasis on its clinical and histopathological characteristics.  Case report:  21 years old woman, black, who came to the service complaining about a spot in the oral cavity. The lesions presented a month of evolution, radial growth and no painful symptoms. They consisted of blackened plates of regular contour with whitish stretch marks on their periphery, rounded shape, sharp edges, on bilateral jugular mucosa, which measured approximately 13 mm on the left side and 25 mm on the right. After the incisional biopsy and histopathological analysis, the suspicion of oral pigment lichen planus was confirmed. The proposed treatment for the lesions was conservative through strict clinical follow-up.  Conclusion:  The importance and difficulty of the diagnosis of pigment lichen planus is emphasized, especially due to its low occurrence in the oral cavity and its atypical clinical characteristics and similar to other oral lesions. In this context, the relevance of the histopathological examination is ratified and the need for further studies to clarify the etiological factors involved in this pathology is highlighted.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[liquen plano oral]]></kwd>
<kwd lng="es"><![CDATA[hiperpigmentación]]></kwd>
<kwd lng="es"><![CDATA[lesiones autoinmunes, lesión bucal]]></kwd>
<kwd lng="en"><![CDATA[Oral Lichen Planus]]></kwd>
<kwd lng="en"><![CDATA[Hyperpigmentation]]></kwd>
<kwd lng="en"><![CDATA[Oral Pathology]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cheng]]></surname>
<given-names><![CDATA[YSL]]></given-names>
</name>
<name>
<surname><![CDATA[Gould]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Kurago]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Fantasia]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Muller]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Diagnosis of oral lichen planus: a position paper of the American Academy of Oral and Maxillofacial Pathology]]></article-title>
<source><![CDATA[Oral Surg Oral Med Oral Pathol Oral Radiol]]></source>
<year>2016</year>
<volume>122</volume>
<page-range>332-54</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bhutani]]></surname>
<given-names><![CDATA[LK]]></given-names>
</name>
<name>
<surname><![CDATA[Bedi]]></surname>
<given-names><![CDATA[TR]]></given-names>
</name>
<name>
<surname><![CDATA[Pandhi]]></surname>
<given-names><![CDATA[RK]]></given-names>
</name>
<name>
<surname><![CDATA[Nayak]]></surname>
<given-names><![CDATA[NC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Lichen planus pigmentosus]]></article-title>
<source><![CDATA[Dermatologica]]></source>
<year>1974</year>
<volume>149</volume>
<page-range>43-50</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Peralta]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Pazos]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Sabban]]></surname>
<given-names><![CDATA[EC]]></given-names>
</name>
<name>
<surname><![CDATA[Schroh]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Cabo]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Liquen plano pigmentoso invertido Reporte del primer caso pediátrico y revisión de la literatura]]></article-title>
<source><![CDATA[Arch Argent Dermatol]]></source>
<year>2015</year>
<volume>65</volume>
<page-range>189-94</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gorouhi]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Davari]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Fazel]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cutaneous and mucosal lichen planus: a comprehensive review of clinical subtypes, risk factors, diagnosis, and prognosis]]></article-title>
<source><![CDATA[Sci World J]]></source>
<year>2014</year>
<volume>2014</volume>
<page-range>1-22</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[El-Naggar]]></surname>
<given-names><![CDATA[AK]]></given-names>
</name>
<name>
<surname><![CDATA[Chan]]></surname>
<given-names><![CDATA[JKC]]></given-names>
</name>
<name>
<surname><![CDATA[Grandis]]></surname>
<given-names><![CDATA[JR]]></given-names>
</name>
<name>
<surname><![CDATA[Takata]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Slootweg]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
</person-group>
<source><![CDATA[WHO classification of tumours of the head and neck]]></source>
<year>2017</year>
<edition>4th</edition>
<publisher-loc><![CDATA[Lyon ]]></publisher-loc>
<publisher-name><![CDATA[IARC Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Boñar-Alvarez]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez Sayáns]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Garcia-Garcia]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Chamorro-Petronacci]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Gándara-Vila]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Luces-González]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Correlation between clinical and pathological features of oral lichen planus]]></article-title>
<source><![CDATA[Medicine (Baltimore)]]></source>
<year>2019</year>
<volume>98</volume>
<page-range>1-5</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gonzalez-Moles]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Scully]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Gil-Montoya]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Oral lichen planus: Controversies surrounding malignant transformation]]></article-title>
<source><![CDATA[Oral Dis]]></source>
<year>2008</year>
<volume>14</volume>
<page-range>229-43</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wickham]]></surname>
<given-names><![CDATA[LF]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sur unsigne pathognomoniquedelichen du Wilson (lichen plan) stries et punctuations grisatres]]></article-title>
<source><![CDATA[Ann Dermatol Syph]]></source>
<year>1895</year>
<volume>6</volume>
<page-range>17-20</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Goncalves]]></surname>
<given-names><![CDATA[ABF]]></given-names>
</name>
<name>
<surname><![CDATA[Missio]]></surname>
<given-names><![CDATA[DM]]></given-names>
</name>
<name>
<surname><![CDATA[Santos NA da]]></surname>
<given-names><![CDATA[SQ dos]]></given-names>
</name>
<name>
<surname><![CDATA[Gonçalves]]></surname>
<given-names><![CDATA[PPF]]></given-names>
</name>
<name>
<surname><![CDATA[Issa]]></surname>
<given-names><![CDATA[MC]]></given-names>
</name>
<name>
<surname><![CDATA[Rachael]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Líquen plano pigmentoso com apresentação atípica simulando uma máscara de dormir]]></article-title>
<source><![CDATA[Rev Da Soc Port Dermatologia e Venereol]]></source>
<year>2018</year>
<volume>76</volume>
<page-range>71-4</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hartanto]]></surname>
<given-names><![CDATA[FK]]></given-names>
</name>
<name>
<surname><![CDATA[Kallarakal]]></surname>
<given-names><![CDATA[TG]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pigmented Oral Lichen Planus: A Case Report]]></article-title>
<source><![CDATA[Sci Dent J]]></source>
<year>2017</year>
<volume>1</volume>
<page-range>11-6</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Al-Mutairi]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[El-Khalawany]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinicopathological characteristics of lichen planus pigmentosus and its response to tacrolimus ointment: An open label, non-randomized, prospective study: original article]]></article-title>
<source><![CDATA[J Eur Acad Dermatology Venereol]]></source>
<year>2010</year>
<volume>24</volume>
<page-range>535-40</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alrashdan]]></surname>
<given-names><![CDATA[MS]]></given-names>
</name>
<name>
<surname><![CDATA[Cirillo]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[McCullough]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Oral lichen planus: a literature review and update]]></article-title>
<source><![CDATA[Arch Dermatol Res]]></source>
<year>2016</year>
<volume>308</volume>
<page-range>539-51</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chitturi]]></surname>
<given-names><![CDATA[RT]]></given-names>
</name>
<name>
<surname><![CDATA[Sindhuja]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Parameswar]]></surname>
<given-names><![CDATA[RA]]></given-names>
</name>
<name>
<surname><![CDATA[Nirmal]]></surname>
<given-names><![CDATA[RM]]></given-names>
</name>
<name>
<surname><![CDATA[Reddy]]></surname>
<given-names><![CDATA[BVR]]></given-names>
</name>
<name>
<surname><![CDATA[Dineshshankar]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A clinical study on oral lichen planus with special emphasis on hyperpigmentation]]></article-title>
<source><![CDATA[J Pharm Bioallied Sci]]></source>
<year>2015</year>
<volume>7</volume>
<page-range>S495-8</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Neville]]></surname>
<given-names><![CDATA[BW]]></given-names>
</name>
<name>
<surname><![CDATA[Damm]]></surname>
<given-names><![CDATA[DD]]></given-names>
</name>
<name>
<surname><![CDATA[Allen]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
<name>
<surname><![CDATA[Bouquot]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
</person-group>
<source><![CDATA[Patologia Oral e Maxilofacial]]></source>
<year>2009</year>
<edition>3rd</edition>
<publisher-loc><![CDATA[Rio de Janeiro ]]></publisher-loc>
<publisher-name><![CDATA[Saunders Elsevier]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ghosh]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Coondoo]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Lichen planus pigmentosus: The controversial consensus]]></article-title>
<source><![CDATA[Indian J Dermatol]]></source>
<year>2016</year>
<volume>61</volume>
<page-range>482</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bhutani]]></surname>
<given-names><![CDATA[LK]]></given-names>
</name>
<name>
<surname><![CDATA[George]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Bhate]]></surname>
<given-names><![CDATA[SM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Vitamin A in the treatment of lichen planus pigmentosus]]></article-title>
<source><![CDATA[Br J Dermatol]]></source>
<year>1979</year>
<volume>100</volume>
<page-range>473-4</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
