<?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>S0034-75072011000200010</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Tumor odontogênico adenomatóide em mandíbula]]></article-title>
<article-title xml:lang="es"><![CDATA[Tumor odontógeno adenomatoide de la mandíbula]]></article-title>
<article-title xml:lang="en"><![CDATA[Adenomatoid odontogenic tumor in mandible]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de Almeida Azevedo]]></surname>
<given-names><![CDATA[Roberto]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bráulio Carneiro]]></surname>
<given-names><![CDATA[Júnior]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Safira Andrade]]></surname>
<given-names><![CDATA[Lúcio Costa]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silveira de Castro]]></surname>
<given-names><![CDATA[Carlos Henrique]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Hospital Santo Antônio  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidade Federal de Bahia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brasil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2011</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2011</year>
</pub-date>
<volume>48</volume>
<numero>2</numero>
<fpage>172</fpage>
<lpage>180</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0034-75072011000200010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0034-75072011000200010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0034-75072011000200010&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[El tumor odontógeno adenomatoide es una lesión relativamente infrecuente que afecta principalmente a las mujeres durante la segunda década de vida, porque su sitio predilecto es la región anterior de la mandíbula, con una lesión por lo general asociada con la corona del diente. Se reporta un caso de tumor odontógeno adenomatoide en la región anterior de la mandíbula junto con sus resultados clínicos, radiológicos e histológicos así como su tratamiento quirúrgico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Adenomatoid odontogenic tumor is a relatively uncommon lesion, which affects mainly individuals of the female during the second decade due, showing as a site of predilection for the anterior region of the maxilla presenting lesion usually associated with the crown of a tooth incluso. Os authors report a case of an adenomatoid odontogenic tumor in the anterior region of mandible, together with their clinical, radiographic and histological and its surgical treatment.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Tumor odontogênico adenomatóide é uma lesão relativamente incomum, que acomete preferencialmente indivíduos do sexo feminino durante a segunda década de vida. Exibe como sítio de predileção a região anterior da maxila, é geralmente associado à coroa de um dente incluso. Este trabalho tem o objetivo de apresentar um caso clínico de tumor odontogênico adenomatóide. Este se apresenta localizado em região anterior da mandíbula. Pretende-se ainda abordar suas características clínicas, radiográficas e histológicas, além do tratamento cirúrgico conservador de eleição.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[tumor odontógeno adenomatoide]]></kwd>
<kwd lng="es"><![CDATA[adenoameloblastoma]]></kwd>
<kwd lng="es"><![CDATA[tumor odontógeno]]></kwd>
<kwd lng="en"><![CDATA[adenomatoid odontogenic tumor]]></kwd>
<kwd lng="en"><![CDATA[adenoameloblastoma]]></kwd>
<kwd lng="en"><![CDATA[odontogenic tumor]]></kwd>
<kwd lng="pt"><![CDATA[tumor odontogênico adenomatoide]]></kwd>
<kwd lng="pt"><![CDATA[adenoameloblastoma]]></kwd>
<kwd lng="pt"><![CDATA[tumor odontogênico]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="right"><font face="Verdana, Arial, Helvetica, sans-serif" size="2">    <B>PRESENTACI&Oacute;N DE CASOS</B></font></p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="4"><b>Tumor odontog&ecirc;nico    adenomat&oacute;ide em mand&iacute;bula</b></font></p>     <p>&nbsp;</p> <B>     <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="3">Tumor odont&oacute;geno    adenomatoide de la mand&iacute;bula</font>      <P>     <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="3">Adenomatoid odontogenic    tumor in mandible</font>     <P>     ]]></body>
<body><![CDATA[<P>     <P>      <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Roberto de Almeida    Azevedo<SUP>I</SUP>, Br&aacute;ulio Carneiro J&uacute;nior<SUP>II</SUP>, L&uacute;cio    Costa Safira Andrade<SUP>III</SUP>, Carlos Henrique Silveira de Castro<SUP>IV</SUP>    </font>      <P>  </B>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><SUP>I</SUP>Doutor    em Radiologia. Mestre em Cirurgia Bucomaxilofacial. Cirurgi&atilde;o Bucomaxilofacial.    Licenciado em Odontologia. Hospital Santo Ant&ocirc;nio, Brasil.    <br>   <SUP>II</SUP>Mestre em Cl&iacute;nica Odontol&oacute;gica pela Universidade    Federal da Bahia. Cirurgi&atilde;o Bucomaxilofacial facial. Licenciado em Odontologia.    Hospital Santo Ant&ocirc;nio. (Obras Sociais Irm&atilde; Dulce), Brasil.    <br>   <SUP>III</SUP>Mestre em Cl&iacute;nica Odontol&oacute;gica. Cirurgi&atilde;o    Bucomaxilofacial. Licenciado em Odontologia pela Universidade Federal da Bahia,    Brasil.    <br>   <SUP>IV</SUP>Licenciado em Odontologia. Hospital Santo Ant&ocirc;nio (Obras    Sociais Irm&atilde; Dulce), Brasil.</font>    <br>      ]]></body>
<body><![CDATA[<P>     <P>     <P><hr size="1" noshade>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B>RESUMO</B> </font> </p>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Tumor odontog&ecirc;nico    adenomat&oacute;ide &eacute; uma les&atilde;o relativamente incomum, que acomete    preferencialmente indiv&iacute;duos do sexo feminino durante a segunda d&eacute;cada    de vida. Exibe como s&iacute;tio de predile&ccedil;&atilde;o a regi&atilde;o    anterior da maxila, &eacute; geralmente associado &agrave; coroa de um dente    incluso. Este trabalho tem o objetivo de apresentar um caso cl&iacute;nico de    tumor odontog&ecirc;nico adenomat&oacute;ide. Este se apresenta localizado em    regi&atilde;o anterior da mand&iacute;bula. Pretende-se ainda abordar suas caracter&iacute;sticas    cl&iacute;nicas, radiogr&aacute;ficas e histol&oacute;gicas, al&eacute;m do    tratamento cir&uacute;rgico conservador de elei&ccedil;&atilde;o. </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Descritores:</I> Tumor odontog&ecirc;nico adenomatoide, adenoameloblastoma, tumor odontog&ecirc;nico. </font> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><hr size="1" noshade> </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B>RESUMEN</B>  </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">El tumor odont&oacute;geno    adenomatoide es una lesi&oacute;n relativamente infrecuente que afecta principalmente    a las mujeres durante la segunda d&eacute;cada de vida, porque su sitio predilecto    es la regi&oacute;n anterior de la mand&iacute;bula, con una lesi&oacute;n por    lo general asociada con la corona del diente. Se reporta un caso de tumor odont&oacute;geno    adenomatoide en la regi&oacute;n anterior de la mand&iacute;bula junto con sus    resultados cl&iacute;nicos, radiol&oacute;gicos e histol&oacute;gicos as&iacute;    como su tratamiento quir&uacute;rgico. </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Palabras clave</I>:  Tumor odont&oacute;geno adenomatoide, adenoameloblastoma, tumor odont&oacute;geno. </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><hr size="1" noshade></font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B>ABSTRACT</B>    </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Adenomatoid odontogenic    tumor is a relatively uncommon lesion, which affects mainly individuals of the    female during the second decade due, showing as a site of predilection for the    anterior region of the maxilla presenting lesion usually associated with the    crown of a tooth incluso. Os authors report a case of an adenomatoid odontogenic    tumor in the anterior region of mandible, together with their clinical, radiographic    and histological and its surgical treatment.</font>      ]]></body>
<body><![CDATA[<P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Key words:</I>  Adenomatoid odontogenic tumor, adenoameloblastoma, odontogenic tumor. </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><hr size="1" noshade></font>     <P>      <P>      <P>      <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B><font size="3">INTRODU&Ccedil;&Atilde;O</font></B>    </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">O tumor odontog&ecirc;nico    adenomat&oacute;ide (TOA) &eacute; uma les&atilde;o relativamente incomum, de    origem do epit&eacute;lio odontog&ecirc;nico, que foi descrita primeiramente    por Gash, em 1934. Stafne (1948), por&eacute;m, foi o primeiro a reconhec&ecirc;-lo    como entidade. At&eacute; ent&atilde;o, a les&atilde;o era considerada uma variante    do ameloblastoma e era denominada odontoameloblastoma.<SUP>1</SUP> Somente em    1969, Philipsen e Birn estabeleceram sua denomina&ccedil;&atilde;o atual, sendo    reconhecido pela Organiza&ccedil;&atilde;o Mundial de Sa&uacute;de (OMS), em    1971, como uma neoplasia benigna de origem ectod&eacute;rmica.<SUP>2,3</SUP>    </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Clinicamente, apresenta-se    como uma les&atilde;o de crescimento lento, com pouca ou nenhuma sintomatologia    dolorosa, causando expans&atilde;o &oacute;ssea. Acomete, preferencialmente,    a regi&atilde;o de caninos e pr&eacute;-molares, tanto na maxila quanto na mand&iacute;bula,    sendo a predomin&acirc;ncia pela maxila evidente, na propor&ccedil;&atilde;o    de 2:1.<SUP>4-6</SUP> </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Considerado uma    les&atilde;o pouco freq&uuml;ente que representa aproximadamente 3 % dos tumores    odontog&ecirc;nicos. Philipsen (1991) realizou um estudo com 499 casos de TOA,    onde constatou que o sexo feminino &eacute; mais acometido, numa propor&ccedil;&atilde;o    de 2:1, e que &eacute; diagnosticado numa restrita faixa et&aacute;ria -entre    os 10 e 30 anos- com a maioria dos casos aparecendo na segunda d&eacute;cada    de vida.<SUP>7-10</SUP> A intra-&oacute;ssea &eacute; mais comum na maxila que    na mand&iacute;bula, numa rela&ccedil;&atilde;o de 2,1:1, e a perif&eacute;rica    &eacute; encontrada quase que exclusivamente, na regi&atilde;o anterior de maxila.<SUP>11,12</SUP>    </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Radiograficamente,    o TOA apresenta-se como uma &aacute;rea radiol&uacute;cida de contornos bem    definidos por uma cortical &oacute;ssea, que, dependendo do est&aacute;gio de    matura&ccedil;&atilde;o da les&atilde;o, poder&aacute; ou n&atilde;o conter    em seu interior focos radiopacos compat&iacute;veis com zonas calcificadas.<SUP>13-15</SUP>    Contudo a les&atilde;o pode ou n&atilde;o estar associada a um dente n&atilde;o    irrompido, dos quais 60% s&atilde;o caninos.<SUP>16,17</SUP></font>      ]]></body>
<body><![CDATA[<P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Philipsen subclassificou    o TOA, de acordo com tr&ecirc;s variantes:<SUP>8</SUP> </font>     <blockquote>       <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Folicular</I>:      onde o tumor est&aacute; associado &agrave; coroa de um dente n&atilde;o irrompido      e corresponde a 73 % das les&otilde;es intra-&oacute;sseas; essa variante      &eacute; bastante confundida com o cisto dent&iacute;gero.</font> </p>       <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Extra-folicular</I>:      onde o tumor n&atilde;o est&aacute; associado a um dente incluso, encontrando-se      em uma posi&ccedil;&atilde;o interradicular, provocando, na maioria das vezes,      afastamento radicular das unidades vizinhas &agrave; les&atilde;o. Nesses      casos, o diagn&oacute;stico diferencial &eacute; feito com o cisto residual      e o cisto periodontal lateral. </font> </p>       <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Extra-&oacute;ssea      ou perif&eacute;rica</I>: geralmente essa variante &eacute; diagnosticada      como fibroma gengival ou ep&uacute;lide fibrosa, podendo apresentar discreta      eros&atilde;o da cortical &oacute;ssea alveolar. </font> </p> </blockquote>     <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">    <br>   Histologicamente, nota-se a prolifera&ccedil;&atilde;o de c&eacute;lulas epiteliais    semelhantes aos pr&eacute;-ameloblastos que se agrupam em massas, formando estruturas    semelhantes a ductos denominadas pseudo-ductos. Nessas massas, as c&eacute;lulas    tomam forma cuboidal.<SUP>18,19</SUP> Esses pseudo-ductos, em algumas &aacute;reas,    est&atilde;o preenchidos por material eosin&oacute;filo e, em outras regi&otilde;es,    esse material &eacute; escasso ou completamente inexistente. Algumas vezes,    materiais calcificados s&atilde;o encontrados entre esses pseudo-ductos.<SUP>10,20-22</SUP>    </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">O TOA deve ter    seu diagn&oacute;stico bem diferenciado de algumas les&otilde;es, a exemplo    de ameloblastoma, uma vez que o progn&oacute;stico desse &eacute; bem mais duvidoso    por se tratar de um tumor mais agressivo e devido a sua associa&ccedil;&atilde;o    com dentes n&atilde;o irrompidos, deve-se incluir o cisto dent&iacute;gero.<SUP>9,23,24</SUP>    Acrescenta-se, ainda, o cisto residual, cisto periodontal lateral e, quanto    &agrave; presen&ccedil;a de focos radiopacos, o diagn&oacute;stico diferencial    deve ser realizado com cisto odontog&ecirc;nico calcificante e o tumor odontog&ecirc;nico    epitelial calcificante.<SUP>4 </SUP>Considerando que o TOA &eacute; um tumor    benigno e apresenta comportamento n&atilde;o agressivo, caracterizado por crescimento    lento e progressivo, baixa tend&ecirc;ncia &agrave; recidiva e pela presen&ccedil;a    de uma c&aacute;psula indicativa de aus&ecirc;ncia de invas&atilde;o aos tecidos    circunjacentes, o tratamento eleito &eacute; cir&uacute;rgico conservador por    excis&atilde;o e curetagem.<SUP>17,19,25</SUP> De acordo com a posi&ccedil;&atilde;o    e do envolvimento do dente n&atilde;o irrompido associado &agrave; les&atilde;o,    deve-se ou n&atilde;o preserv&aacute;-lo, tracionando-o ortodonticamente.<SUP>6</SUP>    </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Este artigo informa    um caso de tumor Odontog&ecirc;nico Adenomatoide localizado em regi&atilde;o    de s&iacute;nfise mandibular abordando suas caracter&iacute;sticas cl&iacute;nicas,    radiogr&aacute;ficas e histol&oacute;gicas, al&eacute;m do tratamento cir&uacute;rgico    conservador de elei&ccedil;&atilde;o.</font>     ]]></body>
<body><![CDATA[<P>      <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B><font size="3">RELATO    DO CASO</font></B> </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Paciente (MNCS),    17 anos de idade, g&ecirc;nero feminino, faioderma, procedente de Jequi&eacute;-BA,    compareceu ao ambulat&oacute;rio do Servi&ccedil;o de Cirurgia e Traumatologia    Bucomaxilofacial do Hospital Santo Ant&ocirc;nio-Associa&ccedil;&atilde;o Obras    Sociais Irm&atilde; Dulce com queixa de aumento de volume em regi&atilde;o mentoniana.    Durante a anamnese relatou que a tumefa&ccedil;&atilde;o estava presente h&aacute;    cerca de 06 meses, sem dor ou sangramento e que lhe causava uma grande defici&ecirc;ncia    est&eacute;tica (<a href="#fig1_10">Fig. 1</a>). Ao exame cl&iacute;nico extrabucal,    observou-se significativo aumento de volume em regi&atilde;o anterior de mand&iacute;bula.    No exame intrabucal, constatou-se uma tumefa&ccedil;&atilde;o na regi&atilde;o    compreendida entre os pr&eacute;-molares com mau posicionamento dent&aacute;rio    das unidades envolvidas e aus&ecirc;ncia da unidade 3.2. &Agrave; palpa&ccedil;&atilde;o,    a les&atilde;o possu&iacute;a consist&ecirc;ncia firme e a mucosa apresentava    colora&ccedil;&atilde;o de aspecto normal (<a href="#fig2_10">Fig. 2</a>).</font>     <P align="center"><a name="fig1_10"></a><img src="/img/revistas/est/v48n2/f0110211.jpg" width="353" height="320">      
<P align="center"><a name="fig2_10"></a><img src="/img/revistas/est/v48n2/f0210211.jpg" width="437" height="339">     
<P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">    <br>   Exames radiogr&aacute;ficos panor&acirc;mico e oclusal foram realizados na paciente,    onde evidenciavam uma zona radiol&uacute;cida bem delimitada com poucos focos    radiopacos em seu interior envolvendo, por completo, a unidade dental 3.2. Estendia-se    do 1&#186; pr&eacute;-molar esquerdo ao 2&#186; pr&eacute;-molar direito, sendo    que as ra&iacute;zes das unidades envolvidas apresentavam-se bastante divergentes    e algumas com processo de reabsor&ccedil;&atilde;o (<a href="#fig3_10">Fig.    3</a>). Foi realizada uma bi&oacute;psia incisional sob anestesia local, juntamente    com uma pun&ccedil;&atilde;o aspirativa que confirmou a natureza s&oacute;lida    da les&atilde;o. Os achados histol&oacute;gicos de parede do cisto revestidos    pela prolifera&ccedil;&atilde;o c&eacute;lulas epiteliais com forma&ccedil;&atilde;o    central de c&eacute;lulas acinares-similes com material eosinofilico central    e ainda com deposi&ccedil;&atilde;o de calcioesferita confirmaram o diagn&oacute;stico    de (TOA), o que contrariou a suspeita cl&iacute;nica inicial de ameloblastoma,    devido &agrave;s caracter&iacute;sticas cl&iacute;nico-radiogr&aacute;ficas    da les&atilde;o.</font>     <P align="center"><a name="fig3_10"></a><img src="/img/revistas/est/v48n2/f0310211.jpg" width="495" height="354">      
<P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">    ]]></body>
<body><![CDATA[<br>   O tratamento cir&uacute;rgico realizado foi a ex&eacute;rese do tumor por curetagem,    sob anestesia geral, ap&oacute;s constata&ccedil;&atilde;o da normalidade dos    exames pr&eacute;-operat&oacute;rios solicitados. O tumor apresentava-se encapsulado,    o que tornou poss&iacute;vel sua completa excis&atilde;o e preserva&ccedil;&atilde;o    dos feixes v&aacute;sculo-nervosos mentonianos bilateralmente. A unidade dental    3.2 foi removida juntamente com a les&atilde;o e as outras unidades foram mantidas    para a realiza&ccedil;&atilde;o de tratamento endod&ocirc;ntico posterior. Durante    o periodo de 03 meses, a paciente foi acompanhada e n&atilde;o houve qualquer    relato de inc&ocirc;modo no p&oacute;s-operat&oacute;rio, nem mesmo parestesia    ou qualquer sinal de recidiva da les&atilde;o. A radiografia panor&acirc;mica    de cerca de 100 dias ap&oacute;s a cirurgia confirma tal achado cl&iacute;nico    e evidencia neo-forma&ccedil;&atilde;o &oacute;ssea na regi&atilde;o. A paciente    continua sendo acompanhada e encontra-se sob tratamento endod&ocirc;ntico das    unidades dentais pr&oacute;ximas &agrave; les&atilde;o (<a href="#fig4_10">Figs.    4</a> y <a href="#fig5_10">5</a>).</font>     <P align="center"><a name="fig4_10"></a><img src="/img/revistas/est/v48n2/f0410211.jpg" width="471" height="392">      
<P align="center"><a name="fig5_10"></a><img src="/img/revistas/est/v48n2/f0510211.jpg" width="415" height="369">     
<P>      <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B><font size="3">DISCUSS&Atilde;O</font></B>    </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">O TOA tem caracter&iacute;sticas    bem definidas, sendo a maior incid&ecirc;ncia &eacute; encontrada na maxila.    Na maioria dos casos est&aacute; associada a dentes retidos, com maior freq&uuml;&ecirc;ncia    relacionada aos dentes caninos. O tamanho geralmente varia entre 1,5 a 3 cm,    mas existem relatos de tumor com aproximadamente 9 cm.<SUP>3 </SUP>Segundo os    relatos geralmente se localiza na regi&atilde;o anterior da maxila, por&eacute;m    neste caso a les&atilde;o foi observada na regi&atilde;o anterior da mand&iacute;bula.    Mede em seu maior diametro 0,5 cm, e est&aacute; associado a um dente incisivo.    </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">H&aacute; predomin&acirc;ncia    para este tipo de tumor &eacute; o sexo feminino, numa propor&ccedil;&atilde;o    2:1, com maior freq&uuml;&ecirc;ncia na segunda d&eacute;cada de vida,<SUP>2,4,16,20-23</SUP>    sendo essas caracter&iacute;sticas encontradas neste presente caso, o qual a    paciente do sexo feminino e 17 anos de idade. </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">A incid&ecirc;ncia    &eacute; mais comum na maxila que na mand&iacute;bula, numa rela&ccedil;&atilde;o    de 2,1:1, o que diferiu quanto ao caso encontrado em nosso servi&ccedil;o, pois    este se apresentou em regi&atilde;o anterior de mand&iacute;bula.<SUP>2,6 </SUP>Na    maioria dos casos a imagem radiogr&aacute;fica &eacute; uma &aacute;rea radiol&uacute;cida,    bem limitada, circunscrita, unilocular associada a um canino superior incluso    o que difere do caso encontrado, pois estava associado a um incisivo lateral    inferior.<SUP>8,26</SUP> </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Deve-se atentar    para que n&atilde;o haja erro diagn&oacute;stico entre TOA e o ameloblastoma,    pois mesmo que ambas les&otilde;es tenham origem odontog&ecirc;nica, elas diferem    quanto &agrave; idade, sexo, a incid&ecirc;ncia, localiza&ccedil;&atilde;o anat&ocirc;mica,    tipo de tratamento e recidiva, al&eacute;m de tamb&eacute;m terem distintivo    aspectos histol&oacute;gicos.<SUP>1,4,</SUP> Neste presente trabalho, o grande    aumento do volume encontrado levou a suspeita cl&iacute;nica de ameloblastoma,    no entanto, a bi&oacute;psia incisional pr&eacute;via ao tratamento final revelou    a verdadeira natureza do tumor, permitindo a elabora&ccedil;&atilde;o de um    plano de tratamento adequado. </font>      ]]></body>
<body><![CDATA[<P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">O TOA &eacute;    tratado cirurgicamente por enuclea&ccedil;&atilde;o e curetagem, com exclusividade    remo&ccedil;&atilde;o da les&atilde;o, sem tend&ecirc;ncia de recidiva.<SUP>4,15,17-19</SUP>    No presente caso, a abordagem cir&uacute;rgica permitiu uma neoforma&ccedil;&atilde;o    &oacute;ssea na regi&atilde;o, verificada pela radiografia de controle, bem    como o regresso das ra&iacute;zes que haviam sido encontradas deslocadas da    sua posi&ccedil;&atilde;o inicial. </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">&Eacute; importante    relatar que radiograficamente se torna praticamente imposs&iacute;vel o diagn&oacute;stico    preciso, pois pode ser confundido com uma s&eacute;rie de outras patologias.    Destaca-se a interven&ccedil;&atilde;o cir&uacute;rgica conservadora como forma    de tratamento de elei&ccedil;&atilde;o nos casos de tumores odontog&ecirc;nicos    adenomat&oacute;ides e a estrutura patol&oacute;gica incluindo o elemento dent&aacute;rio    atingido devem-se obrigatoriamente serem enviados a avalia&ccedil;&atilde;o    histopatol&oacute;gica.</font>     <P>      <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B><font size="3">REFER&Ecirc;NCIAS    BIBLIOGR&Aacute;FICAS</font></B> </font>      <!-- ref --><P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">1. Philipsen HP,    Birn H. The adenomatoid odontogenic tumor; ameloblastic adenomatoid tumor; or    adenoameloblastoma. Acta Pathol Microbiol Scand. 1969;75:375.     </font>     <!-- ref --><P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">2. Philipsen HP,    Reichart PA, Zhang KH. Adenomatoid odontogenic tumor: Biologic profile based    on 499 cases. 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<body><![CDATA[<P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Recibido: 19 de    enero de 2011.    <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Aprobado:    4 de febrero de 2011.</font>     <P>     <P>      <P>      <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Dr.<I> Carlos Henrique    Silveira de Castro. </I>Ladeira do Acupe de Brotas. Bairro Brotas. E-mail: <U><FONT COLOR="#0000ff"><a href="mailto:carloshsilveirac@hotmail.com">carloshsilveirac@hotmail.com</a></FONT></U>    </font>       ]]></body><back>
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