<?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>0212-7199</journal-id>
<journal-title><![CDATA[Anales de Medicina Interna]]></journal-title>
<abbrev-journal-title><![CDATA[An. Med. Interna (Madrid)]]></abbrev-journal-title>
<issn>0212-7199</issn>
<publisher>
<publisher-name><![CDATA[Arán Ediciones, S. L.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0212-71992003000900009</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Hipoestesia mentoniana como manifestación inicial de cáncer sistémico]]></article-title>
<article-title xml:lang="en"><![CDATA[Mental numbness as the initial manifestation of systemic cancer]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montero Pérez]]></surname>
<given-names><![CDATA[F. J.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maira González]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oria Pino]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Luna Morales]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cosano Santiago]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campo Vázquez]]></surname>
<given-names><![CDATA[P. del]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Centro de Salud El Higuerón  ]]></institution>
<addr-line><![CDATA[ Córdoba]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2003</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2003</year>
</pub-date>
<volume>20</volume>
<numero>9</numero>
<fpage>42</fpage>
<lpage>44</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S0212-71992003000900009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S0212-71992003000900009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S0212-71992003000900009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Se describe el caso de un paciente que consultó por hipoestesia mentoniana que en el curso evolutivo resultó ser secundario a un carcinoma de pulmón. Los procesos linfoproliferativos, el cáncer de mama y el de pulmón son los procesos neoplásicos que más frecuentemente se asocian con neuropatía mentoniana. La presencia de una neuropatía mentoniana, lejos de ser considerada un síntoma "banal", debe alertar al clínico de la presencia de cáncer e iniciar su búsqueda de forma inmediata.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[This issue decribe the clinical picture of a man who consulted by hypoanaesthesia in the chin area that was secondary to a lung cancer. The most common primary cancers associated with mental neuropathy are haematological malignancies, breast and lung cancers. The presence o mental neuropathy must not be considered an "banal" symptom. It should be quickly recognised in order to research the presence of cancer.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Neuropatía mentoniana]]></kwd>
<kwd lng="es"><![CDATA[Cáncer]]></kwd>
<kwd lng="es"><![CDATA[Caso clínico]]></kwd>
<kwd lng="es"><![CDATA[Revisión]]></kwd>
<kwd lng="en"><![CDATA[Mental neuropathy]]></kwd>
<kwd lng="en"><![CDATA[Cancer]]></kwd>
<kwd lng="en"><![CDATA[Case report]]></kwd>
<kwd lng="en"><![CDATA[Review]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p>&nbsp;</p> <table border="0" width="100%">   <tr>     <td width="15%"></td>     <td width="85%" valign="top"><font size=5><b>Hipoestesia mentoniana como &nbsp;manifestaci&oacute;n inicial       de    <br>       c&aacute;ncer  sist&eacute;mico</b></font>           <p><font size="3">  F. J. MONTERO PÉREZ, N. MAIRA GONZÁLEZ, A. ORIA PINO, S. LUNA MORALES,&nbsp;    <br>  J. M. COSANO SANTIAGO, P. DEL CAMPO VÁZQUEZ</font></p>           <p><font size="3"><i>  Centro de Salud &#8220;El Higuer&oacute;n&#8221;. Zona B&aacute;sica de Occidente.  Distrito Sanitario de C&oacute;rdoba. C&oacute;rdoba</i> </font></p>           <p>&nbsp;</td>   </tr> </table> <table border="0" width="100%">   <tr>     <td width="48%" valign="top"></td>     <td width="4%"></td>     <td width="48%" valign="top"><font size="2"><i>MENTAL NUMBNESS AS THE       INITIAL MANIFESTATION&nbsp;    <br>       OF SYSTEMIC CANCER</i></font>           <p>&nbsp;</td>   </tr>   <tr>     <td width="48%" valign="top">     <p><font size="3">  RESUMEN </font></p>     <p><font size="3">  Se describe el caso de un paciente que consult&oacute; por hipoestesia  mentoniana que en el curso evolutivo result&oacute; ser secundario a un carcinoma  de pulm&oacute;n. Los procesos linfoproliferativos, el c&aacute;ncer de mama  y el de pulm&oacute;n son los procesos neopl&aacute;sicos que m&aacute;s frecuentemente  se asocian con neuropat&iacute;a mentoniana. La presencia de una neuropat&iacute;a mentoniana, lejos de ser considerada un s&iacute;ntoma &#8220;banal&#8221;, debe  alertar al cl&iacute;nico de la presencia de c&aacute;ncer e iniciar su b&uacute;squeda de forma inmediata. </font></p>     ]]></body>
<body><![CDATA[<p><font size="3">PALABRAS CLAVE: Neuropat&iacute;a mentoniana. C&aacute;ncer.  Caso cl&iacute;nico.  Revisi&oacute;n.</font></p>     </td>     <td width="4%"></td>     <td width="48%" valign="top">     <p><font size="3">  ABSTRACT</font></p>     <p><font size="3"><i>   This issue decribe the clinical picture of a &nbsp;man who consulted  by hypoanaesthesia in the chin area that was secondary to a lung cancer.  The most common primary cancers associated with mental neuropathy are haematological malignancies, breast and lung cancers. The presence o mental neuropathy must  not be considered an &#8220;banal&#8221; symptom. It should be quickly recognised in order to research the presence of cancer.</i></font></p>     <p><font size="3">KEY WORDS: <i> Mental neuropathy. Cancer. Case report. Review.</i> </font></p>     </td>   </tr> </table>     <p><font size="3"><i>Montero P&eacute;rez FJ, Maira Gonz&aacute;lez  N, Oria Pino A, Luna Morales S, Cosano Santiago JM, del Campo V&aacute;zquez  P. Hipoestesia mentoniana como &nbsp;manifestaci&oacute;n  inicial de c&aacute;ncer sist&eacute;mico. An Med Interna (Madrid) 2003;  20: 480-482.</i></font></p> <hr width="30%" align="left">     <p><font size="2"><i>Trabajo aceptado</i>: 7 de febrero de 2003</font></p>     <p><font size="2"> <i>  Correspondencia:</i> Fco. Javier Montero P&eacute;rez. C/ Guti&eacute;rrez de los  R&iacute;os, 26. 14002 C&oacute;rdoba. e-mail: <a href="mailto:javiermo@telefonica.net">javiermo@telefonica.net</a></font></p> <hr>     <p><font size="3">INTRODUCCI&Oacute;N </font></p>     <p><font size="3">  La neuropat&iacute;a mentoniana se caracteriza por la aparici&oacute;n de disestesias  en la piel del ment&oacute;n y en la mucosa de la enc&iacute;a y labio inferior  hasta la l&iacute;nea media de la cara, regi&oacute;n inervada por el nervio  mentoniano. Es un s&iacute;ntoma que frecuentemente se asocia a c&aacute;ncer,  bien como la primera manifestaci&oacute;n de &eacute;ste o bien indicio de la  progresi&oacute;n de un c&aacute;ncer previamente diagnosticado. </font></p>     <p><font size="3">  En general,  el proceso diagn&oacute;stico conlleva la conjugaci&oacute;n de los s&iacute;ntomas  que refiere el paciente y los hallazgos de la exploraci&oacute;n f&iacute;sica  que, las m&aacute;s de las veces no son suficientes para elaborarlo, teniendo  que recurrirse a las exploraciones complementarias. En no demasiadas ocasiones  la referencia de un s&iacute;ntoma por parte del paciente o un hallazgo exploratorio  espec&iacute;fico nos da el diagn&oacute;stico de la entidad nosol&oacute;gica  que lo aqueja (s&iacute;ntoma o signo patognom&oacute;nico). Pero en much&iacute;simas  ocasiones los pacientes nos refieren en la consulta diaria s&iacute;ntomas que,  considerados inespec&iacute;ficos, no son suficientes para emitir un juicio diagn&oacute;stico  coherente, dando lugar a m&uacute;ltiples consultas m&eacute;dicas. </font></p> <font size="1">     ]]></body>
<body><![CDATA[<p><font size="3">CASO APORTADO</font></p>     <p><font size="3">  Paciente var&oacute;n de 65 a&ntilde;os de edad, fumador habitual de 40 cigarrillos  al d&iacute;a desde los 15 a&ntilde;os, diabetes mellitus en tratamiento con  dieta, con aceptable control, sin otros antecedentes de inter&eacute;s. No toma  ning&uacute;n f&aacute;rmaco de forma habitual. Consulta a nuestro centro por  presentar en las &uacute;ltimas 2 semanas entumecimiento en zona hemilabial inferior  derecha, comisura peribucal derecha y zona mandibular limitada a la regi&oacute;n  infracomisural derecha (<A HREF="#f1">Fig. 1</A>). No presentaba antecedentes de trauma dentario  espont&aacute;neo ni intervencionista. La exploraci&oacute;n f&iacute;sica de  la sensibilidad t&aacute;ctil, epicr&iacute;tica y t&eacute;rmica confirma la  hipoestesia referida, no encontrando otras zonas faciales con d&eacute;ficit  de sensibilidad, estando conservado el reflejo corneal. En el resto de la exploraci&oacute;n  f&iacute;sica destaca el hallazgo de caries dentarias en molares superiores,  hernia umbilical en la exploraci&oacute;n abdominal sin otros datos patol&oacute;gicos  de la exploraci&oacute;n sist&eacute;mica (no evidencia de adenopat&iacute;as  cervicales, supraclaviculares, axilares, ni inguinales). Se le efectu&oacute; una  anal&iacute;tica b&aacute;sica con hemograma: Hto=46,9%, Hb=16,2 g/dl, hemat&iacute;es, 4.800.000/mm</font></font><FONT SIZE="3"><SUP>3</SUP></FONT><font size="1"><font size="3">, plaquetas=180.000/mm</font></font><FONT SIZE="3"><SUP>3</SUP></FONT><font size="1"><font size="3">; y bioqu&iacute;mica sangu&iacute;nea en  la de destacaba glucemia de 132 mg/dl, colesterol=231 mg/dl, HA1c=7,6%, siendo  las enzimas hep&aacute;ticas (AST, ALT, fosfatasa alcalina y GGT) normales. La  anal&iacute;tica elemental de orina fue normal.</font></p>     <p ALIGN="center"><font size="3"><A NAME="f1"><img src="/img/ami/v20n9/web/9fig1.gif" width="289" height="231"></A></font></p>     <p><font size="3">Derivado a odont&oacute;logo  se le realiza ortopantomograf&iacute;a que no muestra lesiones &oacute;seas,  objetiv&aacute;ndose algunos granulomas apicales radiculares en molares superiores,  que no corresponden con la zona de hipoestesia, inici&aacute;ndose el tratamiento  odontol&oacute;gico endod&oacute;ntico y con antiinflamatorios (ibuprofeno).  El paciente contin&uacute;a con el s&iacute;ntoma motivo de consulta consultando  nuevamente por fiebre de hasta 39 &ordm;C y tos con expectoraci&oacute;n herrumbrosa,  objetiv&aacute;ndose T&ordf; axilar de 37,8 &ordm;C, TA=140/80 mmHg, sin hallazgos  en la auscultaci&oacute;n respiratoria. Ante la sospecha de proceso neum&oacute;nico  se inicia tratamiento antibi&oacute;tico y antit&eacute;rmico y se le solicita  una radiograf&iacute;a de t&oacute;rax urgente. Al d&iacute;a siguiente, el paciente  vuelve a la consulta para la lectura de la radiograf&iacute;a observ&aacute;ndonos  que esa noche, al rodearse en la cama, hab&iacute;a escuchado un chasquido en  su hemit&oacute;rax izquierdo con intenso dolor costal, a nivel del quinto arco  anterior. La radiograf&iacute;a de t&oacute;rax mostraba una condensaci&oacute;n  paracard&iacute;aca izquierda en l&oacute;bulo inferior izquierdo, muy bien delimitada,  con broncograma a&eacute;reo. Se solicita nueva proyecci&oacute;n radiol&oacute;gica  esta vez de parrilla costal izquierda objetiv&aacute;ndose fractura de 5&ordm; arco  costal izquierdo (fractura patol&oacute;gica). Ante la sospecha de proceso neopl&aacute;sico  pulmonar se deriva al hospital de referencia donde es ingresado en el Servicio  de neumolog&iacute;a y diagnosticado mediante biopsia transbronquial de carcinoma  microc&iacute;tico de pulm&oacute;n. Durante su ingreso presenta episodio de  hemorragia digestiva alta secundario a &uacute;lceras g&aacute;stricas en fase  cicatricial compatibles con gastropat&iacute;a por AINE, requiriendo transfusi&oacute;n  sangu&iacute;nea de 2 concentrados de hemat&iacute;es. Se le practica gammagraf&iacute;a &oacute;sea  que mostr&oacute; focos hipercaptantes en costillas y captaci&oacute;n irregular  en columna que suger&iacute;an afectaci&oacute;n metast&aacute;sica inicial.  La TAC craneal fue normal. El estadiaje evolutivo fue de T2, N3, M1 &oacute;seas  (estadio IV) (E.E.). Se inicia primer ciclo de tratamiento quimioter&aacute;pico  con esquema PE (CIS-P 100 mg/m</font></font><FONT SIZE="3"><sup>2</sup>&nbsp;1&ordm; + etop&oacute;sido: 100 mg/m2 1&ordm;-3&ordm;),  con buena tolerancia.</FONT> </p>     <p><font size="3">    La evoluci&oacute;n del paciente revel&oacute; desaparici&oacute;n  del d&eacute;ficit sensitivo mentoniano aproximadamente a los 30 d&iacute;as  de iniciada la quimioterapia, continu&aacute;ndose con los ciclos pautados seg&uacute;n  el r&eacute;gimen est&aacute;ndar del plan terap&eacute;utico incido. A los 6  meses del diagn&oacute;stico el paciente acude a la consulta por disartria y  disminuci&oacute;n de fuerza en hemicuerpo derecho deriv&aacute;ndose al hospital  por sospecha de met&aacute;stasis cerebrales que fueron confirmadas, falleciendo  durante ese ingreso.     <br>      <br>  DISCUSI&Oacute;N</font> </p>     <p><font size="3">   La neuropat&iacute;a mentoniana (NM) fue descrita por primera vez en 1830 por  Charles Bell (1) en una paciente con c&aacute;ncer de mama y denominada como &#8220;<i>numb  chin syndrome</i>&#8221;. Tambi&eacute;n es conocido como <i> s&iacute;ndrome del ment&oacute;n entumecido</i>, t&eacute;rmino debido a Calverley y Mohnac (2), y como <i> signo de Roger</i>  (3). Es un cuadro cl&iacute;nico caracterizado por la aparici&oacute;n de disestesias  en la piel del ment&oacute;n y en la mucosa de la enc&iacute;a y labio inferior  hasta la l&iacute;nea media de la cara, regi&oacute;n correspondiente al territorio  inervado por el nervio mentoniano, rama sensitiva terminal del dentario inferior,  rama a su vez del nervio trig&eacute;mino (4). La NM puede ser bilateral (5).  Su aparici&oacute;n se relaciona cl&aacute;sicamente con la presencia de neoplasias,  pudiendo ser su s&iacute;ntoma inicial (47% de casos) (6) o reflejo de su progresi&oacute;n  (4,5). Por ello, su presencia obliga a buscar una neoplasia susceptible de diseminaci&oacute;n  a distancia (3).</font> </p>     <p><font size="3">   Son varios los posibles mecanismos fisiopatol&oacute;gicos implicados  en la NM asociada a c&aacute;ncer: el m&aacute;s frecuentemente descrito es por  met&aacute;stasis &oacute;sea de la mand&iacute;bula con compresi&oacute;n del  nervio mentoniano (50% en la serie de Lossos y cols.) (7), por afectaci&oacute;n  metast&aacute;sica de la base del cr&aacute;neo con afectaci&oacute;n proximal  de la rama mandibular (14% en la serie de Lossos) (7) o por infiltraci&oacute;n  neopl&aacute;sica del nervio mentoniano; otros mecanismos posibles son la afectaci&oacute;n  del ganglio de Gasser (8) o la leptomeningitis carcinomatosa (22% en la serie  de Lossos) (7). &nbsp;</font> </p>     <p><font size="3">   La exploraci&oacute;n f&iacute;sica nos puede revelar si  la afectaci&oacute;n es proximal (afectaci&oacute;n metast&aacute;sica de la  base del cr&aacute;neo, leptomeningitis) o distal (afectaci&oacute;n metast&aacute;sica  de la rama &oacute;sea mandibular o infiltraci&oacute;n neopl&aacute;sica del  nervio mentoniano), sugiri&eacute;ndonos su mecanismo fisiopatol&oacute;gico.  En el primer caso, existen tras alteraciones neurol&oacute;gicas como afectaci&oacute;n  de otros pares craneales (VI y VII frecuentemente) o arreflexia (7). La afectaci&oacute;n  metast&aacute;sica mandibular cursa adem&aacute;s de con la alteraci&oacute;n  sensitiva que caracteriza a la NM, con edema y dolor a nivel local (2), fen&oacute;menos  que no suelen ocurrir cuando el mecanismo es la infiltraci&oacute;n del nervio  mentoniano.</font> </p>     ]]></body>
<body><![CDATA[<p><font size="3">   La presencia de una NM debida a c&aacute;ncer se asocia con un mal  pron&oacute;stico, siendo la supervivencia media del paciente de 5-6 meses desde  su aparici&oacute;n (6,9), como ocurri&oacute; en nuestro caso. La desaparici&oacute;n  de la hipoestesia mentoniana tras el tratamiento quimioter&aacute;pico, descrita  en nuestro paciente, es un hecho ya reflejado en la literatura (4,5,10) y se  produce en un per&iacute;odo de tiempo medio de 3 meses (7).</font> </p>     <p><font size="3">   La NM es relativamente  rara, habi&eacute;ndose descrito hasta la actualidad 247 casos por 80 autores,  de los que 26 casos corresponden a 12 autores espa&ntilde;oles (4,5,8,11-14).  Seg&uacute;n Vadell y cols. (4) esta rareza puede ser debida a que la sintomatolog&iacute;a  que provoca este s&iacute;ndrome es escasa y poco molesta para el paciente, lo  que hace que no le d&eacute; importancia y no lo refiera salvo si se efect&uacute;a  una anamnesis espec&iacute;ficamente dirigida.</font> </p>     <p><font size="3">   Ante toda neuropat&iacute;a mentoniana  es obligado realizar un estudio de neoplasia oculta, prestando especial atenci&oacute;n  a los procesos linfoproliferativos y al origen mamario y broncopulmonar, que  representan las etiolog&iacute;as m&aacute;s frecuentes (4), como hemos podido  corroborar en nuestra revisi&oacute;n bibliogr&aacute;fica (15-28) (<A HREF="#f2">Fig. 2</A>).  Las exploraciones complementarias a considerar incluyen un hemograma con f&oacute;rmula  y recuento, una bioqu&iacute;mica sangu&iacute;nea con determinaci&oacute;n de  calcio y prote&iacute;nas totales, un proteinograma, una radiograf&iacute;a de  t&oacute;rax, una ortopantomograf&iacute;a mandibular, TAC craneal de base de  cr&aacute;neo y mand&iacute;bula, citobioqu&iacute;mica del l&iacute;quido cefalorraqu&iacute;deo  y resonancia magn&eacute;tica craneoencef&aacute;lica.</font> </p>     <p><font size="3">   Dada la importancia  del reconocimiento precoz de este s&iacute;ndrome para detectar una posible progresi&oacute;n  del c&aacute;ncer previamente diagnosticado, deber&iacute;a de investigarse la  presencia o no de hipoestesia mentoniana incluy&eacute;ndose este s&iacute;ntoma  en la anamnesis de estos pacientes. Ello, adem&aacute;s permitir&iacute;a conocer  la frecuencia real de este s&iacute;ntoma en los pacientes neopl&aacute;sicos  y aportar&iacute;a m&aacute;s luz al conocimiento de la epidemiolog&iacute;a de este fen&oacute;meno.</font> </p>     <p ALIGN="center"><font size="3"><A NAME="f2"><img src="/img/ami/v20n9/web/9fig2.gif" width="293" height="199"></A></font></p> <font size="1">    <p><font size="3">     <br>  AGRADECIMIENTOS </font></p>     <p><font size="3">   Los autores quieren expresar su agradecimiento al Servicio bibliogr&aacute;fico  de Laboratorios NOVARTIS, por su labor en la b&uacute;squeda bibliogr&aacute;fica  de las referencias de este art&iacute;culo.</font></p>     <p>&nbsp;</p>     <p></font><font size="4"><i>Bibliograf&iacute;a</i></font></p>     ]]></body>
<body><![CDATA[<!-- ref --><p> <font size="1"><font size="3"> 1.&nbsp;&nbsp;Furukawa T, Cahrles Bell`s description of numb chin syndrome. Neurology  1988; 38:331.   </font> </font> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=540422&pid=S0212-7199200300090000900001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p> <font size="1"><font size="3"> 2.&nbsp;&nbsp;Calverley JR, Mohnac AM. Syndrome of the numb chin. 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