<?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>0004-5276</journal-id>
<journal-title><![CDATA[Revista da Associacao Paulista de Cirurgioes Dentistas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Assoc. Paul. Cir. Dent.]]></abbrev-journal-title>
<issn>0004-5276</issn>
<publisher>
<publisher-name><![CDATA[Associacão Paulista de Cirurgiões-Dentistas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0004-52762013000100008</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Diagnóstico e tratamento do cisto nasolabial: relato de caso clínico]]></article-title>
<article-title xml:lang="en"><![CDATA[Diagnosis and treatment of nasolabial cyst: case report]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Monteiro]]></surname>
<given-names><![CDATA[Flavia Heloisa]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Negreiros]]></surname>
<given-names><![CDATA[Renata Matalon]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Milani]]></surname>
<given-names><![CDATA[Basilio de Almeida]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Palmieri]]></surname>
<given-names><![CDATA[Michelle]]></given-names>
</name>
<xref ref-type="aff" rid="A04"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jorge]]></surname>
<given-names><![CDATA[Waldyr Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="A05"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,FOUSP FUNDECTO CTBMF]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A02">
<institution><![CDATA[,FOUSP FUNDECTO CTBMF]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A03">
<institution><![CDATA[,FOUSP FUNDECTO CTBMF]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A04">
<institution><![CDATA[,FOUSP FUNDECTO CTBMF]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A05">
<institution><![CDATA[,FOUSP FUNDECTO CTBMF]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2013</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2013</year>
</pub-date>
<volume>67</volume>
<numero>1</numero>
<fpage>45</fpage>
<lpage>49</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://revodonto.bvsalud.org/scielo.php?script=sci_arttext&amp;pid=S0004-52762013000100008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://revodonto.bvsalud.org/scielo.php?script=sci_abstract&amp;pid=S0004-52762013000100008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://revodonto.bvsalud.org/scielo.php?script=sci_pdf&amp;pid=S0004-52762013000100008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[O cisto nasolabial é um cisto de desenvolvimento não odontogênico raro, que acomete os tecidos moles entre a asa e base do nariz e o lábio superior podendo levar a assimetria facial. Sua patogênese é ainda muito discutida, no entanto, seu diagnóstico é clínico confirmado pelo exame anatomo-patológico. O tratamento clássico é a enucleação da lesão. O objetivo deste artigo é descrever as características, o diagnóstico e o tratamento do cisto nasolabial e relatar um caso clínico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Nasolabial cyst is a rare non-odontogenic development cyst, which affects soft-tissues between the ala and the base of the nose and the upper lip and may lead to facial asymmetry. Its pathogenesis is still controverse, although clinical diagnosis is confirmed by the anatomo-pathological examination. The treatment is enucleation of the lesion. The aim of this article is to describe the characteristics, diagnosis and the treatment of nasolabial cysts and report a clinical case.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[cistos]]></kwd>
<kwd lng="pt"><![CDATA[lábio]]></kwd>
<kwd lng="pt"><![CDATA[nariz]]></kwd>
<kwd lng="pt"><![CDATA[cistos não-odontogênicos]]></kwd>
<kwd lng="en"><![CDATA[cysts]]></kwd>
<kwd lng="en"><![CDATA[lip]]></kwd>
<kwd lng="en"><![CDATA[nose]]></kwd>
<kwd lng="en"><![CDATA[nonodontogenic cysts]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="right"><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>RELATO DE CASO CL&Iacute;NICO</b></font></p>     <p>&nbsp;</p>     <p><font size="4" face="Verdana, Arial, Helvetica, sans-serif"><a name="top"/></a><B>Diagn&oacute;stico e tratamento do cisto nasolabial: relato de caso cl&iacute;nico</B></font></p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana, Arial, Helvetica, sans-serif"><b>Diagnosis and treatment of nasolabial cyst: case report</b> </font></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Flavia Heloisa Monteiro<sup>I</sup>; Renata Matalon Negreiros<sup>II</sup>; Basilio de Almeida Milani<sup>III</sup>; Michelle Palmieri<sup>IV</sup>; Waldyr Antonio Jorge<sup>V</sup></b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"> <sup>I</sup>Aluna do curso de especializa&ccedil;&atilde;o em Cirurgia e Traumatologia Bucomaxilofacial (CTBMF)&ndash; Fundecto/Fousp &ndash; Cirurgi&atilde;-Dentista    <br> <sup>II</sup>Mestre em Ci&ecirc;ncias Odontol&oacute;gicas do Departamento de Odontologia Social da Faculdade de Odontologia da Universidade de S&atilde;o Paulo (Fousp) - Professora assistente Curso de Especializa&ccedil;&atilde;o em CTBMF &ndash; Fundecto/Fousp    ]]></body>
<body><![CDATA[<br> <sup>III</sup>Mestre em Ci&ecirc;ncias Odontol&oacute;gicas do Departamento de Cl&iacute;nica Integrada da Fousp - Professor assistente do Curso de Especializa&ccedil;&atilde;o em Cirurgia e Traumatologia Bucomaxilofacial-FUNDECTO-FOUSP    <br> <sup>IV</sup>Especialista em Cirurgia e Traumatologia Bucomaxilofacial - Professora assistente Curso de Especializa&ccedil;&atilde;o em em CTBMF&ndash; Fundecto/Fousp    <br> <sup>V</sup>Professor livre docente e titular do departamento de Clinica Integrada da Fousp - Coordenador do Curso de Especializa&ccedil;&atilde;o em CTBMF &ndash; Fundecto/Fousp    <br> </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><a href="#back">Autor para correspond&ecirc;ncia</a></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p> <hr size="1" noshade>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>RESUMO</b> </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">O cisto nasolabial &eacute; um cisto de desenvolvimento n&atilde;o odontog&ecirc;nico raro, que acomete os   tecidos moles entre a asa e base do nariz e o l&aacute;bio superior podendo levar a assimetria facial.   Sua patog&ecirc;nese &eacute; ainda muito discutida, no entanto, seu diagn&oacute;stico &eacute; cl&iacute;nico confirmado pelo   exame anatomo-patol&oacute;gico. O tratamento cl&aacute;ssico &eacute; a enuclea&ccedil;&atilde;o da les&atilde;o. O objetivo deste   artigo &eacute; descrever as caracter&iacute;sticas, o diagn&oacute;stico e o tratamento do cisto nasolabial e relatar um caso cl&iacute;nico.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><B>Descritores: </B>cistos; l&aacute;bio; nariz; cistos n&atilde;o-odontog&ecirc;nicos</font></p>     ]]></body>
<body><![CDATA[<p>&nbsp;</p> <hr size="1" noshade>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><B>ABSTRACT</B> </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Nasolabial cyst is a rare non-odontogenic development cyst, which affects soft-tissues between   the ala and the base of the nose and the upper lip and may lead to facial asymmetry.   Its pathogenesis is still controverse, although clinical diagnosis is confirmed by the anatomo-pathological examination. The treatment is enucleation of the lesion. The aim of this article   is to describe the characteristics, diagnosis and the treatment of nasolabial cysts and report a clinical case.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><B>Descriptors: </B>cysts; lip; nose; nonodontogenic cysts</font> </p> <hr noshade size="1">     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana, Arial, Helvetica, sans-serif"><B> RELEV&Acirc;NCIA CL&Iacute;NICA</B></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Permitir ao Cirurgi&atilde;o-Dentista conhecer as caracter&iacute;sticas da   les&atilde;o para que possa inclu&iacute;-la na hip&oacute;tese diagn&oacute;stica e planejar um tratamento adequado.</font></p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana, Arial, Helvetica, sans-serif"><B> INTRODU&Ccedil;&Atilde;O</B></font></p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Os primeiros cistos nasolabiais foram descritos em 1882 por   Zuckerlandl<sup>1,2,3,4,5,6,7,8,9,10</sup> e acreditava-se que eram cistos de reten&ccedil;&atilde;o<sup>1</sup>.   O primeiro relato de caso cl&iacute;nico foi feito em 1892 por McBride<sup>1,10</sup> e foram mais detalhados por Brown-Kelly em 1898<sup>1,4,10</sup>   que considerou a les&atilde;o originada da inflama&ccedil;&atilde;o de gl&acirc;ndulas mucosas da regi&atilde;o<sup>1</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   Desde ent&atilde;o possui uma ampla sinon&iacute;mia: cisto mucoide, cisto   maxilar, cisto de vento, cisto nasovestibular, cisto subalar, cisto   nasogloberular, cisto nasoalveolar<sup>4</sup>, cisto mucoso do nariz, cisto   do vest&iacute;bulo nasal, cisto do assoalho nasal<sup>9</sup>. A les&atilde;o foi muito   estudada por Kledstadt e em 1953 recebeu o nome de Cisto de   Kledstadt<sup>4,5</sup>. Em 1955 Rao o definiu como uma les&atilde;o de tecidos   moles entre o l&aacute;bio superior e o vest&iacute;bulo nasal e usou o termo   nasolabial, diferenciando-o do cisto nasoalveolar, uma les&atilde;o que   levaria a eros&atilde;o da superf&iacute;cie da maxila<sup>4,6</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   O cisto nasolabial &eacute; uma les&atilde;o rara, com a incid&ecirc;ncia chegando   a 0,7% dos cistos maxilares e 2,5% dos cistos n&atilde;o odontog&ecirc;nicos<sup>2,11</sup>.   Maior preval&ecirc;ncia entre a quarta e quinta d&eacute;cadas de vida,   em indiv&iacute;duos do g&ecirc;nero feminino, da ra&ccedil;a negra e 90% dos casos   s&atilde;o unilaterais<sup>3,4,7,10,11,12,13</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   Clinicamente apresenta-se como uma massa ou n&oacute;dulo flutuante   na regi&atilde;o de sulco nasolabial envolvendo a asa do nariz,   podendo levar a obstru&ccedil;&atilde;o nasal, eleva&ccedil;&atilde;o do l&aacute;bio superior<sup>1,3,4,5,9,13</sup>   e aumento de volume no assoalho nasal do lado acometido<sup>14</sup>. A   vitalidade dos elementos dentais &eacute; preservada<sup>3,9</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   Por ser uma les&atilde;o de crescimento lento e indolor os pacientes   procuram tratamento ao perceberem algum sintoma, como   deformidade, obstru&ccedil;&atilde;o nasal ou infec&ccedil;&atilde;o, que em cerca de 50%   dos casos<sup>11,15</sup> pode levar a dor<sup>2,3,4,9</sup>, e drenar para a cavidade oral   ou o vest&iacute;bulo nasal<sup>11,13,15</sup> ou ainda a interfer&ecirc;ncia na utiliza&ccedil;&atilde;o   de pr&oacute;tese<sup>2,12,13</sup>. Eventualmente &eacute; um achado radiogr&aacute;fico em radiografias   extraorais de rotina<sup>11</sup>, ou observado durante um exame   otorrinolaringol&oacute;gico<sup>3</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   O diagn&oacute;stico &eacute; cl&iacute;nico, as radiografias intra e extraoral pouco   elucidam<sup>5</sup>. J&aacute; a tomografia computadorizada e a resson&acirc;ncia magn&eacute;tica   auxiliam no diagn&oacute;stico, delimitando a c&aacute;psula c&iacute;stica, seu   tamanho e sua rela&ccedil;&atilde;o com estruturas adjacentes<sup>4,5,6,16</sup>. O exame   anatomo-patol&oacute;gico confirma a hip&oacute;tese diagn&oacute;stica<sup>13</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   A deformidade facial progressiva pode atingir enormes dimens&otilde;es<sup>17</sup>,   o risco de infec&ccedil;&atilde;o e suas sequelas, como dor e outros sinais   flog&iacute;sticos tornam mandat&oacute;ria a ex&eacute;rese da les&atilde;o<sup>9,11</sup>. O tratamento   cl&aacute;ssico &eacute; a remo&ccedil;&atilde;o cir&uacute;rgica da les&atilde;o com acesso intraoral, com   bom progn&oacute;stico, e recidiva muito rara<sup>5</sup>. Pelo fato de acometer   somente tecidos moles alguns autores<sup>2,14</sup> afirmam que ela n&atilde;o responde   bem a marsupializa&ccedil;&atilde;o.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   O objetivo deste trabalho &eacute; descrever as caracter&iacute;sticas, o diagn&oacute;stico   e o tratamento do cisto nasolabial, ilustrado atrav&eacute;s do   relato um caso cl&iacute;nico, possibilitando ao Cirurgi&atilde;o-Dentista reconhecer   a les&atilde;o, de diagn&oacute;stico basicamente cl&iacute;nico, a fim de instituir   a terapia adequada.</font></p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana, Arial, Helvetica, sans-serif"><b>RELATO DE CASO CL&Iacute;NICO</b> </font></p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">A paciente do g&ecirc;nero feminino, 51 anos, melanoderma, ASA   II (hipertens&atilde;o arterial), compareceu a cl&iacute;nica do curso de especializa&ccedil;&atilde;o   de Cirurgia Bucomaxilofacial da Fundecto, coordenado   pelo Prof. Dr. Waldyr Antonio Jorge, encaminhada por   uma Cirurgi&atilde;-Dentista pedindo avalia&ccedil;&atilde;o e remo&ccedil;&atilde;o da les&atilde;o em   maxila lado direito que causava desadapta&ccedil;&atilde;o da pr&oacute;tese total superior (paciente ed&ecirc;ntula).</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   A paciente apresentava assimetria no ter&ccedil;o m&eacute;dio da face devido   a um aumento de volume, fl&aacute;cido, na lateral direita do nariz   levando a apagamento do sulco nasolabial, eleva&ccedil;&atilde;o da asa do   nariz e assoalho nasal do mesmo lado. A colora&ccedil;&atilde;o e integridade   tecidual estavam mantidas, e a paciente referia sensibilidade  &agrave; palpa&ccedil;&atilde;o em toda a regi&atilde;o da tumefa&ccedil;&atilde;o (<a href="#fig01">Figura 1</a>). Ao exame   intraoral observava-se uma massa, de cerca de 2,5 cm, na regi&atilde;o   de fundo de sulco, com a mucosa de colora&ccedil;&atilde;o normal, &iacute;ntegra e   tamb&eacute;m com sensibilidade a palpa&ccedil;&atilde;o (<a href="#fig02">Figura 2</a>).</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   A tomografia computadorizada (<a href="#fig03">Figura 3</a>) da regi&atilde;o mostrava   uma imagem com densidade semelhante a tecido mole sugerindo   uma les&atilde;o arredondada circunscrita, bem delimitada de cerca de   2,5 cm de di&acirc;metro, anterior a abertura piriforme do lado direito,   limitada aos tecidos moles da regi&atilde;o, levando a um desvio do septo   nasal e eros&atilde;o da maxila do mesmo lado.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   Com base nas caracter&iacute;sticas cl&iacute;nicas e nos exames complementares   levantou-se a hip&oacute;tese diagn&oacute;stica de cisto nasolabial e   foi indicada a remo&ccedil;&atilde;o cir&uacute;rgica da les&atilde;o. O procedimento foi feito   com anestesia local, acesso intraoral e difus&atilde;o romba da les&atilde;o,   com enuclea&ccedil;&atilde;o do cisto (acesso de Denker<sup>3</sup>) (<a href="#fig04">Figura 4</a>). A incis&atilde;o   foi feita sobre a les&atilde;o, em fundo de sulco, da regi&atilde;o da fossa   canina at&eacute; a linha m&eacute;dia. Ap&oacute;s difus&atilde;o da mucosa visualizamos a   c&aacute;psula da les&atilde;o e realizamos descolamento por planos em toda   sua extens&atilde;o at&eacute; total remo&ccedil;&atilde;o (<a href="#fig05">Figura 5</a>).</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   O conte&uacute;do do cisto era um l&iacute;quido seroso amarelado e a   mucosa nasal foi preservada (<a href="#fig06">Figura 6</a>). Realizada sutura simples.   Administrado amoxicilina 1g uma hora antes do ato operat&oacute;rio e   prescrito amoxicilina 500mg 8/8 horas por sete dias, diclofenaco   s&oacute;dico 50mg 8/8h por tr&ecirc;s dias e dipirona s&oacute;dica 500mg para dor.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   A pe&ccedil;a cir&uacute;rgica (<a href="#fig07">Figura 7</a>) foi enviada para exame anatomo-patol&oacute;gico   para confirmar o diagn&oacute;stico.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   Os cortes histol&oacute;gicos evidenciaram c&aacute;psula c&iacute;stica apresentando   epit&eacute;lio c&iacute;stico do tipo simples c&uacute;bico, com varia&ccedil;&atilde;o para   pseudoestratificado, contendo v&aacute;rias c&eacute;lulas mucosas por toda a   extens&atilde;o. O epit&eacute;lio dispunha-se planamente, por&eacute;m com &aacute;reas   de invagina&ccedil;&atilde;o para a c&aacute;psula e outras focais de estratifica&ccedil;&atilde;o. A   c&aacute;psula c&iacute;stica era composta por tecido conjuntivo denso n&atilde;o modelado,   permeado por hemorragia em quase toda a extens&atilde;o, somada   a &aacute;reas de vasos hiper&ecirc;micos e alguns contendo neutr&oacute;filos   polimorfonucleares no interior, completando o quadro a presen&ccedil;a   de feixes de fibras musculares esquel&eacute;ticas (<a href="#fig08">Figura 8</a>). O diagn&oacute;stico   foi de cisto nasolabial</font><font size="2" face="Verdana, Arial, Helvetica, sans-serif">.</font></p>      <p>&nbsp;</p>     <p><a name="fig01"></a></p>     <p>&nbsp; </p>     ]]></body>
<body><![CDATA[<p align="center"><img src="/img/revistas/apcd/v67n1/a08fig01.jpg">     <p>&nbsp;</p>     <p><a name="fig02"></a></p>     <p>&nbsp; </p>     <p align="center"><img src="/img/revistas/apcd/v67n1/a08fig02.jpg">     <p>&nbsp;</p>     <p><a name="fig03"></a></p>     <p>&nbsp; </p>     <p align="center"><img src="/img/revistas/apcd/v67n1/a08fig03.jpg">     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p><a name="fig04"></a></p>     <p>&nbsp; </p>     <p align="center"><img src="/img/revistas/apcd/v67n1/a08fig04.jpg">     <p>&nbsp;</p>     <p><a name="fig05"></a></p>     <p>&nbsp; </p>     <p align="center"><img src="/img/revistas/apcd/v67n1/a08fig05.jpg">     <p>&nbsp;</p>     <p><a name="fig06"></a></p>     <p>&nbsp; </p>     ]]></body>
<body><![CDATA[<p align="center"><img src="/img/revistas/apcd/v67n1/a08fig06.jpg">     <p>&nbsp;</p>     <p><a name="fig07"></a></p>     <p>&nbsp; </p>     <p align="center"><img src="/img/revistas/apcd/v67n1/a08fig07.jpg">     <p>&nbsp;</p>     <p><a name="fig08"></a></p>     <p>&nbsp; </p>     <p align="center"><img src="/img/revistas/apcd/v67n1/a08fig08.jpg">     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p><a name="fig09"></a></p>     <p>&nbsp; </p>     <p align="center"><img src="/img/revistas/apcd/v67n1/a08fig09.jpg">     <p>&nbsp;</p>     <p><a name="fig10"></a></p>     <p>&nbsp; </p>     <p align="center"><img src="/img/revistas/apcd/v67n1/a08fig10.jpg">     <p>&nbsp;</p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">A paciente evoluiu bem sem complica&ccedil;&otilde;es, foi feito acompanhamento   p&oacute;s-operat&oacute;rio de sete dias, um m&ecirc;s, tr&ecirc;s, seis e dez meses e um ano e at&eacute; o momento sem recidiva (Figuras <a href="#fig09">9</a> e <a href="#fig10">10</a>).</font></p>     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p><font size="3" face="Verdana, Arial, Helvetica, sans-serif"><b>DISCUSS&Atilde;O</b> </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   Acredita-se que o cisto desenvolva-se ap&oacute;s um evento gatilho,   como trauma ou infec&ccedil;&atilde;o, estimulando os restos epiteliais a   proliferar e formar uma les&atilde;o c&iacute;stica<sup>1,9,18</sup>. A paciente no nosso caso   relata trauma antigo na regi&atilde;o.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   Os artigos mais recentes sugerem falta de evid&ecirc;ncias do aprisionamento   de epit&eacute;lio embrion&aacute;rio na regi&atilde;o<sup>8,13,14,18</sup> e enfatizam a   semelhan&ccedil;a do epit&eacute;lio do ducto nasolacrimal (psdeudoestratificado   colunar) com o do cisto<sup>3,4,11,13,14,18</sup>. Alguns casos interessantes   como o cisto em um paciente portador de fissura labiopalatina<sup>18</sup> e   outro em um paciente com inflama&ccedil;&atilde;o do saco nasolacrimal bilateral   (dacriocistite), associado ao cisto nasolabial bilateral<sup>8</sup> devem   ser levados em conta, fortalecendo a Teoria de Bruggemann<sup>3,8,13,14</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   A les&atilde;o tem crescimento lento e indolor<sup>3,8,10,15</sup> e leva a um   abaulamento da asa do nariz, eleva&ccedil;&atilde;o do l&aacute;bio superior, apagamento   do sulco nasolabial, eleva&ccedil;&atilde;o do assoalho nasal do lado   acometido<sup>3,5,6,14</sup>, sinais presentes no nosso caso relatado, por&eacute;m   esta paciente n&atilde;o conseguiu relatar o tempo de evolu&ccedil;&atilde;o da les&atilde;o.   Pode ser confundido com uma les&atilde;o inflamat&oacute;ria periapical, devido  &agrave; imagem radiogr&aacute;fica escassa1, mas mant&eacute;m &iacute;ntegra a vitalidade   dos dentes<sup>8,16</sup>. Apesar de ed&ecirc;ntula, nossa paciente tamb&eacute;m   relatou sensibilidade na regi&atilde;o.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   Radiograficamente, em alguns casos, podemos observar um   abaulamento e afinamento da parede do assoalho da fossa nasal   e &agrave;s vezes at&eacute; eros&atilde;o da cortical da maxila<sup>2,3,4,13</sup>. Alguns autores referem   uma mudan&ccedil;a na convexidade da margem lateral e anterior</font><font size="2" face="Verdana, Arial, Helvetica, sans-serif"> do assoalho nasal<sup>1,4</sup>. Em poucos casos pode ocorrer um aumento da   radiolucidez no peri&aacute;pice dos incisivos<sup>1,11,14</sup>. Les&otilde;es pequenas ou recentes   n&atilde;o apresentam modifica&ccedil;&otilde;es na radiografia oclusal<sup>1</sup>. Pudemos   verificar todas essas altera&ccedil;&otilde;es na radiografia do caso descrito.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   A tomografia computadorizada e resson&acirc;ncia magn&eacute;tica podem   mostrar com maior nitidez a natureza c&iacute;stica da les&atilde;o e sua   rela&ccedil;&atilde;o com a asa nasal e a maxila<sup>4,14</sup>. A preserva&ccedil;&atilde;o do seio maxilar   e a eros&atilde;o &oacute;ssea s&atilde;o sugestivas de um cisto de tecido mole   em detrimento de les&otilde;es de origem &oacute;ssea<sup>17</sup>. No caso em quest&atilde;o, a   tomografia computadorizada mostrou estes detalhes e contribuiu   para a elabora&ccedil;&atilde;o da hip&oacute;tese diagn&oacute;stica.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   Pode-se tamb&eacute;m fazer uso da radiografia com contraste,   lembrando-se do risco de infec&ccedil;&atilde;o<sup>13,14</sup>. Chinellato &amp; Damante<sup>1</sup>,   em 1984, relatam que o contraste tem valor did&aacute;tico, mas n&atilde;o   no diagn&oacute;stico cl&iacute;nico de rotina. J&aacute; a ecografia e a pun&ccedil;&atilde;o s&atilde;o de   pouca valia, devido aos achados uniformes<sup>4</sup>. Temos ainda como   exame auxiliar a nasofibroscopia flex&iacute;vel<sup>6</sup>. Com a tomografia computadorizada   em m&atilde;os pudemos delimitar os limites da les&atilde;o,   mostrando a natureza da les&atilde;o e sua rela&ccedil;&atilde;o com as estruturas   adjacentes, n&atilde;o vimos necessidade destes outros exames.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   Outras les&otilde;es que devemos levar em conta no diagn&oacute;stico diferencial   s&atilde;o: fur&uacute;nculo<sup>11</sup> e p&oacute;lipo nasal<sup>2</sup>, cistos odontog&ecirc;nicos<sup>4</sup>,   cistos mucosos e adenomas<sup>16</sup>, cistos derm&oacute;ide e epiderm&oacute;ide<sup>13</sup> e   ainda neoplasias s&oacute;lidas de menor incid&ecirc;ncia (carcinoma espinocelular   e tumores de gl&acirc;ndulas salivares menores)<sup>11</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   Quanto ao tratamento a abordagem cl&aacute;ssica &eacute; a enuclea&ccedil;&atilde;o   da les&atilde;o com acesso intraoral, sob anestesia local ou geral<sup>1,8,14,19</sup>,   realizando a bi&oacute;psia excisional, mas atualmente alguns autores   utilizam a marsupializa&ccedil;&atilde;o<sup>7,9,15,19</sup>, na qual acredita-se transformar   o cisto em uma esp&eacute;cie de seio paranasal, coberto por epit&eacute;lio   similar ao da cavidade nasal<sup>19</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   Concordando com outros autores<sup>19</sup>, Chen et al. (2009) descreveram   o uso de marsupializa&ccedil;&atilde;o atrav&eacute;s da microdebrida&ccedil;&atilde;o   endosc&oacute;pica, preservando a mucosa, diminuindo o trauma, o tempo   operat&oacute;rio e as complica&ccedil;&otilde;es p&oacute;s-operat&oacute;rias mas ressaltam   a necessidade de maiores estudos da t&eacute;cnica inclusive quanto a   recidiva<sup>7</sup>. Por isso, a cirurgia tradicional &eacute; mais indicada e segura,   com a hip&oacute;tese diagn&oacute;stica levantada clinicamente, optou-se pela   enuclea&ccedil;&atilde;o com acesso intraoral sob anestesia local, buscando a   resolu&ccedil;&atilde;o do caso em um ato operat&oacute;rio.</font></p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   Durante a enuclea&ccedil;&atilde;o da les&atilde;o h&aacute; o risco de forma&ccedil;&atilde;o de f&iacute;stula   oronasal, devido a proximidade da les&atilde;o com a mucosa do   assoalho nasal<sup>1,11</sup>, pequenas comunica&ccedil;&otilde;es podem ser deixadas   sem nenhuma manobra de s&iacute;ntese, mas as maiores devem ser suturadas   no mesmo ato operat&oacute;rio<sup>2</sup>, no nosso caso cl&iacute;nico a mucosa   nasal foi totalmente preservada.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   O progn&oacute;stico &eacute; favor&aacute;vel sem relato de recorr&ecirc;ncia<sup>14</sup>. Quanto  &agrave; maligniza&ccedil;&atilde;o, na literatura h&aacute; um caso de degenera&ccedil;&atilde;o carcinomatosa,   descrito por Arnold em 1929<sup>3,8</sup> e outro caso de transforma&ccedil;&atilde;o   maligna em 1967<sup>8</sup>.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   Apesar de ser uma les&atilde;o de diagn&oacute;stico cl&iacute;nico, devemos analisar   os exames de imagem criteriosamente, evitando o sub-diagn&oacute;stico   de uma les&atilde;o bilateral, e m&uacute;ltiplos procedimentos cir&uacute;rgicos<sup>11</sup>.</font></p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana, Arial, Helvetica, sans-serif"><b>CONCLUS&Atilde;O</b> </font></p>       <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"> O cisto nasolabial &eacute; raro e possui caracter&iacute;sticas cl&iacute;nicas e iconol&oacute;gicas   singulares, que o Cirurgi&atilde;o-Dentista deve conhecer para   incluir a les&atilde;o na hip&oacute;tese diagn&oacute;stica e planejar um tratamento adequado.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   A les&atilde;o tem a resolu&ccedil;&atilde;o simples e segura com a enuclea&ccedil;&atilde;o   com acesso intraoral e bi&oacute;psia excisional, poupando o paciente de   passar por dois ou mais procedimentos cir&uacute;rgicos.</font></p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana, Arial, Helvetica, sans-serif"><b>APLICA&Ccedil;&Atilde;O CL&Iacute;NICA</b> </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"> O cisto nasolabial na maioria das vezes possui diagn&oacute;stico puramente   cl&iacute;nico. O artigo traz informa&ccedil;&otilde;es essenciais para n&atilde;o submeter   o paciente a interven&ccedil;&otilde;es desnecess&aacute;rias, como endodontia de elementos pr&oacute;ximos e m&uacute;ltiplos procedimentos cir&uacute;rgicos.</font></p>     ]]></body>
<body><![CDATA[<p>&nbsp;</p>     <p><font size="3" face="Verdana, Arial, Helvetica, sans-serif"><B>REFER&Ecirc;NCIAS </B></font></p>     <!-- ref --><p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">1. Chinellato LEM, Damante JH. Contribution of radiographs in the diagnosis of nasoalveolar cyst. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 1984;58:729-35.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=407916&pid=S0004-5276201300010000800001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   2. Pereira Filho VA, Silva AC, Moraes M, Villalba H. Nasolabial cyst: case report. Braz Dent J.   2002;13(3):212-4.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=407918&pid=S0004-5276201300010000800002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   3. Felix JAP, Ferreira PLF, Correa R, Cantini R, Neto RM, Feliz F. Cisto nasolabial bilateral: relato   de dois caos e revis&atilde;o de literatura. Rev Bras Otorrinolaringol. 2003 Mar/Abr;69(2);279-82.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=407920&pid=S0004-5276201300010000800003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">   4. Aquilino RN, Bazzo VJ, Faria RJA, Leid NLM, B&oacute;scolo FN. Cisto nasolabial: apresenta&ccedil;&atilde;o de um   caso e descri&ccedil;&atilde;o em imagens por TC e RM. Rev Bras Otorrinolaringol. 2008;74(3):467-71.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=407922&pid=S0004-5276201300010000800004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     ]]></body>
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<body><![CDATA[<p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><a name="back"/></a><a href="#top"><img src="/img/revistas/apcd/v67n1/seta.jpg" border="0" align="absmiddle"/></a><b>Autor para correspond&ecirc;ncia:</b>    <br>   </font><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Flavia Heloisa Monteiro    <br>   Rua Heitor Peixoto, 318 - Apto. 183    <br>   Aclima&ccedil;&atilde;o &ndash; S&atilde;o Paulo &ndash; SP    <br>   01543-000    <br>   Brasil</font><font size="2" face="Verdana, Arial, Helvetica, sans-serif">    <br>   e-mail: </font><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><a href="mailto:flavia.monteiro@hotmail.com" target="_blank">flavia.monteiro@hotmail.com</a></font></p>      <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Recebido em: mar/2012    <br>  Aprovado em: ago/2012</font></p>      <p>&nbsp;</p>     ]]></body>
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