<?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>2448-9190</journal-id>
<journal-title><![CDATA[Revista alergia México]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. alerg. Méx.]]></abbrev-journal-title>
<issn>2448-9190</issn>
<publisher>
<publisher-name><![CDATA[Colegio Mexicano de Inmunología Clínica y Alergia A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2448-91902025000300008</article-id>
<article-id pub-id-type="doi">10.29262/ram.v72i3.1506</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Eritema nodoso: a propósito de un caso]]></article-title>
<article-title xml:lang="en"><![CDATA[Erythema nodosum: a case report]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Reynoso]]></surname>
<given-names><![CDATA[Maura Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández-Mendoza]]></surname>
<given-names><![CDATA[Luis Tonatiuh]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bernal-Ocampo]]></surname>
<given-names><![CDATA[Amairani de Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Mexicano del Seguro Social  ]]></institution>
<addr-line><![CDATA[ Jalisco]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Departamento de Anatomía Patológica  ]]></institution>
<addr-line><![CDATA[Guadalajara Jalisco]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2025</year>
</pub-date>
<volume>72</volume>
<numero>3</numero>
<fpage>64</fpage>
<lpage>67</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-91902025000300008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-91902025000300008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-91902025000300008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes: El eritema nodoso es la variante clínica patológica más frecuente de paniculitis, que aparece con lesiones nodulares eritematosas y las infecciones son la causa más frecuente; no obstante, no pueden descartarse otras causas: inmunológicas, inflamatorias o metabólicas, por lo que el diagnóstico debe ser multidisciplinario y orientar el tratamiento a la causa subyacente, porque en la mayoría de los casos suele ser la punta del iceberg de un proceso patológico importante.  Reporte de caso: Paciente femenina de 18 años, con antecedente de hepatoblastoma, nefrocalcinosis e infecciones recurrentes, quien un mes después manifestó lesiones características eritematosas en la tibia izquierda, con posterior edema y limitación de movimiento. Se realizaron estudios paraclínicos y se confirmó el diagnóstico, mediante biopsia, de paniculitis septal sin vasculitis, con infiltrado inflamatorio perivascular.  Conclusión: Aunque la mayor parte de las veces el eritema nodoso suele curarse de forma espontánea, puede ser la expresión inicial de enfermedades infecciosas, inmunológicas o genéticas, por lo que es importante un enfoque diagnóstico temprano y multidisciplinario para orientar el tratamiento y mejorar el pronóstico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Erythema nodosum is the most common clinical-pathological variant of panniculitis, presenting with erythematous nodular lesions. Infections are the most common cause. However, other causes cannot be ruled out: immunological, inflammatory, or metabolic. Therefore, the diagnosis must be multidisciplinary and direct treatment toward the underlying cause, as in most cases, it is usually the tip of the iceberg of a significant pathological process.  Case report: An 18-year-old female patient with a history of hepatoblastoma, nephrocalcinosis, and recurrent infections presented one month later with characteristic erythematous lesions on the left tibia, with subsequent edema and limited movement. Paraclinical studies were performed, and the diagnosis of septal panniculitis without vasculitis and perivascular inflammatory infiltrate was confirmed by biopsy.  Conclusion: Although erythema nodosum usually heals spontaneously, it can be the initial expression of infectious, immunological, or genetic diseases, so an early and multidisciplinary diagnostic approach is important to guide treatment and improve prognosis.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Eritema nodoso]]></kwd>
<kwd lng="es"><![CDATA[Paniculitis]]></kwd>
<kwd lng="es"><![CDATA[Hepatoblastoma]]></kwd>
<kwd lng="es"><![CDATA[Nefrocalcinosis]]></kwd>
<kwd lng="es"><![CDATA[Infecciones recurrentes]]></kwd>
<kwd lng="es"><![CDATA[Infiltrado inflamatorio perivascular]]></kwd>
<kwd lng="es"><![CDATA[Biopsia]]></kwd>
<kwd lng="es"><![CDATA[Pronóstico]]></kwd>
<kwd lng="en"><![CDATA[Erythema nodosum]]></kwd>
<kwd lng="en"><![CDATA[Panniculitis]]></kwd>
<kwd lng="en"><![CDATA[Hepatoblastoma]]></kwd>
<kwd lng="en"><![CDATA[Nephrocalcinosis]]></kwd>
<kwd lng="en"><![CDATA[Recurrent infections]]></kwd>
<kwd lng="en"><![CDATA[Perivascular inflammatory infiltrate]]></kwd>
<kwd lng="en"><![CDATA[Biopsy]]></kwd>
<kwd lng="en"><![CDATA[Prognosis]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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