<?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>1665-1146</journal-id>
<journal-title><![CDATA[Boletín médico del Hospital Infantil de México]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Med. Hosp. Infant. Mex.]]></abbrev-journal-title>
<issn>1665-1146</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Salud, Hospital Infantil de México Federico Gómez]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-11462025000500008</article-id>
<article-id pub-id-type="doi">10.24875/bmhim.24000136</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Hemoptisis como síntoma inicial de carcinoma mucoepidermoide pulmonar en un niño]]></article-title>
<article-title xml:lang="en"><![CDATA[Hemoptysis as an initial symptom of pulmonary mucoepidermoid carcinoma in a child]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nuñez-Paucar]]></surname>
<given-names><![CDATA[Héctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Atamari-Anahui]]></surname>
<given-names><![CDATA[Noé]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruzado-Villanueva]]></surname>
<given-names><![CDATA[Carla]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Ponce]]></surname>
<given-names><![CDATA[Víctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Salud del Niño Breña Servicio de Neumología Pediátrica ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Perú</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad San Ignacio de Loyola Unidad de Investigación para la Generación y Síntesis de Evidencias en Salud ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Perú</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Salud del Niño Servicio de Anatomía Patológica ]]></institution>
<addr-line><![CDATA[San Borja ]]></addr-line>
<country>Perú</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Nacional de Salud del Niño Servicio de Cirugía de Tórax y Cardiovascular ]]></institution>
<addr-line><![CDATA[San Borja ]]></addr-line>
<country>Perú</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2025</year>
</pub-date>
<volume>82</volume>
<numero>5</numero>
<fpage>323</fpage>
<lpage>327</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-11462025000500008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-11462025000500008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-11462025000500008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: El carcinoma mucoepidermoide pulmonar es una neoplasia rara en los niños. Los síntomas inespecíficos como la hemoptisis pueden retrasar el diagnóstico porque confunden con otras enfermedades respiratorias.  Caso clínico: Paciente de sexo masculino de 9 años presentó episodios recurrentes de tos y hemoptisis. El paciente presentó meses previos dos episodios similares asociados a sibilancias y fue manejado como crisis asmática. Los estudios radiológicos y la broncoscopia reportaron una masa pulmonar que obstruía el bronquio principal izquierdo, produciendo atelectasia y compromiso del pulmón izquierdo. La biopsia transtorácica resultó positiva para tumor de tipo glándula salival. El tratamiento fue quirúrgico (neumonectomía izquierda). El estudio histopatológico e inmunohistoquímico reportó carcinoma mucoepidermoide de bajo grado. No recibió quimioterapia. A los dos años de seguimiento el paciente estaba asintomático y no evidenciamos recurrencia.  Conclusiones: El carcinoma mucoepidermoide pulmonar es raro en niños. La hemoptisis y los signos de obstrucción bronquial pueden simular otras enfermedades respiratorias, ocasionando retraso en el diagnóstico. El tratamiento es quirúrgico, con buen pronóstico en el seguimiento.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Pulmonary mucoepidermoid carcinoma is a rare neoplasm in children. Nonspecific symptoms such as hemoptysis may delay diagnosis because they are confused with other respiratory diseases.  Clinical case: A 9-year-old male patient presented recurrent episodes of cough and hemoptysis. The patient had two similar episodes associated with wheezing in previous months and was treated as an asthma attack. Radiological studies and bronchoscopy reported a lung mass obstructing the left main bronchus, causing atelectasis and involvement of the left lung. Transthoracic biopsy was positive for a salivary gland tumor. Treatment was surgical (left pneumonectomy). Histopathological and immunohistochemical studies reported low-grade mucoepidermoid carcinoma. He did not receive chemotherapy. After two years of follow-up, the patient was asymptomatic, and we did not see any recurrence.  Conclusions: Pulmonary mucoepidermoid carcinoma is rare in children. Hemoptysis and signs of bronchial obstruction may mimic other respiratory diseases, causing a delay in diagnosis. Treatment is surgical, with a good prognosis during follow-up.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Carcinoma mucoepidermoide]]></kwd>
<kwd lng="es"><![CDATA[Neoplasias del pulmón]]></kwd>
<kwd lng="es"><![CDATA[Neumonectomía]]></kwd>
<kwd lng="es"><![CDATA[Niño]]></kwd>
<kwd lng="en"><![CDATA[Carcinoma]]></kwd>
<kwd lng="en"><![CDATA[Mucoepidermoid]]></kwd>
<kwd lng="en"><![CDATA[Lung neoplasms]]></kwd>
<kwd lng="en"><![CDATA[Pneumonectomy]]></kwd>
<kwd lng="en"><![CDATA[Child]]></kwd>
</kwd-group>
</article-meta>
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