<?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>1130-0558</journal-id>
<journal-title><![CDATA[Revista Española de Cirugía Oral y Maxilofacial]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Esp Cirug Oral y Maxilofac]]></abbrev-journal-title>
<issn>1130-0558</issn>
<publisher>
<publisher-name><![CDATA[ Sociedad Española de Cirugía Oral y Maxilofacial y de Cabeza y Cuello]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1130-05582021000400008</article-id>
<article-id pub-id-type="doi">10.20986/recom.2021.1285/2021</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Carcinoma basoescamoso diseminado. A propósito de un caso]]></article-title>
<article-title xml:lang="en"><![CDATA[Disseminated basosquamous carcinoma: a case report]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hornillos de Villota]]></surname>
<given-names><![CDATA[María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pozo Kreilinger]]></surname>
<given-names><![CDATA[Juan José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[del Castillo Pardo de Vera]]></surname>
<given-names><![CDATA[José Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cebrián Carretero]]></surname>
<given-names><![CDATA[José Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Universitario La Paz Departamento de Cirugía Oral y Maxilofacial ]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Universitario La Paz Departamento de Anatomía Patológica ]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>43</volume>
<numero>4</numero>
<fpage>166</fpage>
<lpage>169</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S1130-05582021000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S1130-05582021000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S1130-05582021000400008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El carcinoma basoescamoso (CBE) cutáneo se considera un subtipo agresivo de carcinoma de células basales (CBC), con un mayor riesgo de recurrencia y metástasis. En muchas ocasiones se diagnostica erróneamente como un carcinoma de células basales (CBC) o carcinoma de células escamosas (CCE), ya que no existen unos criterios histológicos definidos para esta neoplasia. En la actualidad no existe un protocolo estandarizado para el manejo clínico del CBE. Presentamos un caso clínico en un varón de 75 años con un CBE diseminado y una revisión bibliográfica. La revisión de la literatura revela una tasa de metástasis mayor que en el CBC o el CCE, define los factores pronósticos que implican una mayor recurrencia e incide en la búsqueda de la mejor técnica quirúrgica de resección. Resulta importante comprender la historia natural y el tratamiento adecuado de esta neoplasia agresiva.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Cutaneous basosquamous carcinoma (BCC) is considered an aggressive subtype of basal cell carcinoma (BCC) with an increased risk of recurrence and metastasis. It is often misdiagnosed as basal cell carcinoma (BCC) or squamous cell carcinoma (SCC) as there are no defined histological criteria for this neoplasia. Currently, there is no standardized protocol for the clinical management of CBE. We present a clinical case in a 75-year-old man with disseminated CBE and a literature review. The literature review reveals a higher rate of metastasis than in BCC or SCC, defines prognostic factors that imply a higher recurrence, and impacts the search for the best surgical resection technique. It is important to understand the natural history and appropriate treatment of this aggressive neoplasm.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Carcinoma basoescamoso]]></kwd>
<kwd lng="es"><![CDATA[carcinoma basocelular]]></kwd>
<kwd lng="es"><![CDATA[carcinoma de células escamosas]]></kwd>
<kwd lng="en"><![CDATA[Basosquamous carcinoma]]></kwd>
<kwd lng="en"><![CDATA[basal cell carcinoma]]></kwd>
<kwd lng="en"><![CDATA[squamous cell carcinoma]]></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[Shukla]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Khachemoune]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Reappraising basosquamous carcinoma: a summary of histologic features, diagnosis, and treatment]]></article-title>
<source><![CDATA[Arch Dermatol Res]]></source>
<year>2020</year>
<volume>312</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>605-9</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[Zhu]]></surname>
<given-names><![CDATA[GA]]></given-names>
</name>
<name>
<surname><![CDATA[Danial]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Su Chang]]></surname>
<given-names><![CDATA[AL]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Overall and progression-free survival in metastatic basosquamous cancer: a case series]]></article-title>
<source><![CDATA[J Am Acad Dermatol]]></source>
<year>2014</year>
<volume>70</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1145-6</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[Bowman]]></surname>
<given-names><![CDATA[PH]]></given-names>
</name>
<name>
<surname><![CDATA[Ratz]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<name>
<surname><![CDATA[Knoepp]]></surname>
<given-names><![CDATA[TG]]></given-names>
</name>
<name>
<surname><![CDATA[Barnes]]></surname>
<given-names><![CDATA[CJ]]></given-names>
</name>
<name>
<surname><![CDATA[Finley]]></surname>
<given-names><![CDATA[EM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Basosquamous carcinoma]]></article-title>
<source><![CDATA[Dermatol Surg]]></source>
<year>2003</year>
<volume>29</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>830-2</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[Tan]]></surname>
<given-names><![CDATA[CZ]]></given-names>
</name>
<name>
<surname><![CDATA[Rieger]]></surname>
<given-names><![CDATA[KE]]></given-names>
</name>
<name>
<surname><![CDATA[Sarin]]></surname>
<given-names><![CDATA[KY]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Basosquamous Carcinoma: Controversy, Advances, and Future Directions]]></article-title>
<source><![CDATA[Dermatol Surg]]></source>
<year>2017</year>
<volume>43</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>23-31</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Garcia]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Poletti]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Crowson]]></surname>
<given-names><![CDATA[AN]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Basosquamous carcinoma]]></article-title>
<source><![CDATA[J Am Acad Dermatol]]></source>
<year>2009</year>
<volume>60</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>137-43</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Volkenstein]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Wohlschlaeger]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Liebau]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Arens]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Lehnerdt]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Jahnke]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Basosquamous carcinoma--a rare but aggressive skin malignancy]]></article-title>
<source><![CDATA[J Plast Reconstr Aesthet Surg]]></source>
<year>2010</year>
<volume>63</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>e304-6</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[Martin]]></surname>
<given-names><![CDATA[RC]]></given-names>
</name>
<name>
<surname><![CDATA[Edwards]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Cawte]]></surname>
<given-names><![CDATA[TG]]></given-names>
</name>
<name>
<surname><![CDATA[Sewell]]></surname>
<given-names><![CDATA[CL]]></given-names>
</name>
<name>
<surname><![CDATA[McMasters]]></surname>
<given-names><![CDATA[KM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Basosquamous carcinoma: analysis of prognostic factors influencing recurrence]]></article-title>
<source><![CDATA[Cancer]]></source>
<year>2000</year>
<volume>88</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1365-9</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[Zhao]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Ponomaryov]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Ornell]]></surname>
<given-names><![CDATA[KJ]]></given-names>
</name>
<name>
<surname><![CDATA[Zhou]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Dabral]]></surname>
<given-names><![CDATA[SK]]></given-names>
</name>
<name>
<surname><![CDATA[Pak]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[RAS/MAPK Activation Drives Resistance to Smo Inhibition, Metastasis, and Tumor Evolution in Shh Pathway-Dependent Tumors]]></article-title>
<source><![CDATA[Cancer Res]]></source>
<year>2015</year>
<volume>75</volume>
<numero>17</numero>
<issue>17</issue>
<page-range>3623-35</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
