<?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>2444-054X</journal-id>
<journal-title><![CDATA[Cirugía y cirujanos]]></journal-title>
<abbrev-journal-title><![CDATA[Cir. cir.]]></abbrev-journal-title>
<issn>2444-054X</issn>
<publisher>
<publisher-name><![CDATA[Academia Mexicana de Cirugía A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2444-054X2023000100015</article-id>
<article-id pub-id-type="doi">10.24875/ciru.21000857</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Asociación entre las características radiográficas y los tumores óseos de rodilla]]></article-title>
<article-title xml:lang="en"><![CDATA[Association between radiographic findings and knee bone tumors]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera-Saldívar]]></surname>
<given-names><![CDATA[Gustavo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alcántara-Corona]]></surname>
<given-names><![CDATA[Armando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres-Gonzalez]]></surname>
<given-names><![CDATA[Rubén]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Amaya-Zepeda]]></surname>
<given-names><![CDATA[Rubén]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tecualt-Gómez]]></surname>
<given-names><![CDATA[Romeo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cario-Méndez]]></surname>
<given-names><![CDATA[Alejandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Unidades Médicas de Alta Especialidad Dr. Victorio de la Fuente Narváez Servicio de Tumores Óseos]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Unidades Médicas de Alta Especialidad Dr. Victorio de la Fuente Narváez Coordinación de Educación e Investigación en Salud]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2023</year>
</pub-date>
<volume>91</volume>
<numero>1</numero>
<fpage>15</fpage>
<lpage>20</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2444-054X2023000100015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2444-054X2023000100015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2444-054X2023000100015&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes: Los tumores óseos requieren una adecuada evaluación clínico-radiográfica para su diagnóstico. Las radiografías simples son el método incruento usual para establecer el diagnóstico y evaluar diagnósticos diferenciales en el estudio de la patología tumoral ósea.  Objetivo: Reconocer la frecuencia de las características radiográficas y asociarlas con patología tumoral ósea.  Método: Se recolectaron datos radiográficos de 132 pacientes con patología tumoral confirmada mediante biopsia del servicio de tumores óseos del Hospital de Traumatología y Ortopedia Unidades Médicas de Alta Especialidad Dr. Victorio de la Fuente Narváez, Instituto Mexicano del Seguro Social, en Ciudad de México, durante el año 2019.  Resultados: Integraron la muestra 132 pacientes. El tumor benigno más frecuente fue el osteocondroma (27.3%), y el maligno, el osteosarcoma (9.8%). Las lesiones líticas activas (odds ratio [OR]: 6.9; intervalo de confianza del 95% [IC95%]: 2.83-16.85) o agresivas (OR: 26.85; IC95%: 3.21-224) se asociaron a tumor de células gigantes. Las lesiones blásticas de estirpe ósea mal diferenciadas intraóseas (OR: 36.15; IC95%: 4.4-295.5) se asociaron a osteosarcoma. La reacción perióstica (OR: 36.15; IC95%: 4.4-295.5), el patrón apolillado o permeativo (OR: 11.75; IC95%: 1.26-109) y la ubicación central (OR: 3.03; IC95%: 1.37-6.69) se asociaron a lesiones tumorales malignas.  Conclusiones: Las lesiones blásticas de estirpe ósea mal definidas intraóseas, la reacción perióstica y el patrón de destrucción apolillado o permeativo se asocian a lesiones malignas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Bone neoplasms require an adequate clinical-radiographic evaluation for their diagnosis. Plain radiographs are the usual method to establish the diagnosis and evaluate differential diagnoses in the study of bone tumor pathology.  Objective: To recognize the frequency of radiographic characteristics and associate them with bone tumor pathology.  Method: Radiographic data were collected from 132 patients with tumor pathology confirmed by biopsy from bone tumors service of the Traumatology and Orthopedics Hospital Unidades Médicas de Alta Especialidad Dr. Victorio de la Fuente Narváez, Instituto Mexicano del Seguro Social, Ciudad de México, during 2019.  Results: 132 patients were registered. The most frequent benign tumor was osteochondroma (27.3%), and malignant was osteosarcoma (9.8%). Active lytic lesions (odds ratio [OR]: 6.9; 95% confidence interval [95% CI]: 2.83-16.85) or aggressive (OR: 26.85; 95% CI: 3.21-224) were associated with giant cells tumors. Poorly differentiated intraosseous blast lesions of bone lineage (OR: 36.15; 95% CI: 4.4-295.5) were associated with osteosarcoma. The periosteal reaction (OR: 36.15; 95% CI: 4.4-295.5), the moth-eaten or permeative pattern (OR: 11.75; 95% CI: 1.26-109) and the central location of the lesion (OR: 3.03; 95% CI: 1.37-6.69) were associated with malignant tumor lesions.  Conclusions: Poorly defined intraosseous blast lesions of bone lineage, periosteal reaction, and moth-eaten or permeative pattern of destruction are associated with malignant lesions.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Tumores óseos]]></kwd>
<kwd lng="es"><![CDATA[Rodilla]]></kwd>
<kwd lng="es"><![CDATA[Radiografía]]></kwd>
<kwd lng="es"><![CDATA[Diagnóstico]]></kwd>
<kwd lng="es"><![CDATA[Asociación de riesgo]]></kwd>
<kwd lng="en"><![CDATA[Bone neoplasms]]></kwd>
<kwd lng="en"><![CDATA[Knee]]></kwd>
<kwd lng="en"><![CDATA[Radiography]]></kwd>
<kwd lng="en"><![CDATA[Diagnosis]]></kwd>
<kwd lng="en"><![CDATA[Risk assessment]]></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[Priolo]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Cerase]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The current role of radiography in the assessment of skeletal tumors and tumor-like lesions]]></article-title>
<source><![CDATA[Eur J Radiol]]></source>
<year>1998</year>
<volume>27</volume>
<numero>Suppl 1</numero>
<issue>Suppl 1</issue>
<page-range>S77-85</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[Domb]]></surname>
<given-names><![CDATA[BG]]></given-names>
</name>
<name>
<surname><![CDATA[Tyler]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Ellis]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Mccarthy]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Radiographic evaluation of pathological bone lesions:current spectrum of disease and approach to diagnosis]]></article-title>
<source><![CDATA[J Bone Joint Surg Am]]></source>
<year>2004</year>
<volume>86-A</volume>
<numero>Suppl 2</numero>
<issue>Suppl 2</issue>
<page-range>84-90</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[Andrade]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Diógenes]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Heráclio]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Barbosa]]></surname>
<given-names><![CDATA[CE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Knee bone tumors:findings on conventional radiology]]></article-title>
<source><![CDATA[Radiol Bras]]></source>
<year>2016</year>
<volume>49</volume>
<page-range>182-9</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[Macedo]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Ladeira]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Pinho]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Saraiva]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Bonito]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Pinto]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Bone metastases:an overview]]></article-title>
<source><![CDATA[Oncol Rev]]></source>
<year>2017</year>
<volume>11</volume>
<page-range>321</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[Rybak]]></surname>
<given-names><![CDATA[LD]]></given-names>
</name>
<name>
<surname><![CDATA[Rosenthal]]></surname>
<given-names><![CDATA[DI]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Radiological imaging for the diagnosis of bone metastases]]></article-title>
<source><![CDATA[QJ Nucl Med]]></source>
<year>2001</year>
<volume>45</volume>
<page-range>53-64</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[&#321;ukaszewski]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Nazar]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Goch]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[&#321;ukaszewska]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[St&#281;pi&#324;ski]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Jurczyk]]></surname>
<given-names><![CDATA[MU]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Diagnostic methods for detection of bone metastases]]></article-title>
<source><![CDATA[Contemp Oncol (Pozn)]]></source>
<year>2017</year>
<volume>21</volume>
<page-range>98-103</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[Papathanassiou]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Bruna-Muraille]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Jouannaud]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Gagneux-Lemoussu]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Eschard]]></surname>
<given-names><![CDATA[JP]]></given-names>
</name>
<name>
<surname><![CDATA[Liehn]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Single-photon emission computed tomography combined with computed tomography (SPECT/CT) in bone diseases]]></article-title>
<source><![CDATA[Joint Bone Spine]]></source>
<year>2009</year>
<volume>76</volume>
<page-range>474-80</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[Argin]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Isayev]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Kececi]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Arkun]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Sabah]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Multidetector-row computed tomographic angiography findings of musculoskeletal tumors:retrospective analysis and correlation with surgical findings]]></article-title>
<source><![CDATA[Acta Radiol]]></source>
<year>2009</year>
<volume>50</volume>
<page-range>1150-9</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Piperkova]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Mikhaeil]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Mousavi]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Libes]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Viejo-Rullan]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Lin]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Impact of PET and CT in PET/CT studies for staging and evaluating treatment response in bone and soft tissue sarcomas]]></article-title>
<source><![CDATA[Clin Nucl Med]]></source>
<year>2009</year>
<volume>34</volume>
<page-range>146-50</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hanes]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Herget]]></surname>
<given-names><![CDATA[GW]]></given-names>
</name>
<name>
<surname><![CDATA[Füllgraf]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Sutter]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Benndorf]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Bamberg]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Chondrogenic bone tumors:the importance of imaging characteristics]]></article-title>
<source><![CDATA[Rofo]]></source>
<year>2021</year>
<volume>193</volume>
<page-range>262-75</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cottalorda]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Bourelle]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Current treatments of primary aneurysmal bone cysts]]></article-title>
<source><![CDATA[J Pediatr Orthop B]]></source>
<year>2006</year>
<volume>15</volume>
<page-range>155-67</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yoshimura]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Isobe]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Arai]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Aoki]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Kito]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Kato]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Preoperative radiographic and histopathologic evaluation of central chondrosarcoma]]></article-title>
<source><![CDATA[Arch Orthop Trauma Surg]]></source>
<year>2013</year>
<volume>133</volume>
<page-range>1225-31</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Friedland]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Reinus]]></surname>
<given-names><![CDATA[WR]]></given-names>
</name>
<name>
<surname><![CDATA[Fisher]]></surname>
<given-names><![CDATA[AJ]]></given-names>
</name>
<name>
<surname><![CDATA[Wilson]]></surname>
<given-names><![CDATA[AJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Quantitative analysis of the plain radiographic appearance of nonossifying fibroma]]></article-title>
<source><![CDATA[Invest Radiol]]></source>
<year>1995</year>
<volume>30</volume>
<page-range>474-9</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fisher]]></surname>
<given-names><![CDATA[AJ]]></given-names>
</name>
<name>
<surname><![CDATA[Reinus]]></surname>
<given-names><![CDATA[WR]]></given-names>
</name>
<name>
<surname><![CDATA[Friedland]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Wilson]]></surname>
<given-names><![CDATA[AJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Quantitative analysis of the plain radiographic appearance of eosinophilic granuloma]]></article-title>
<source><![CDATA[Invest Radiol]]></source>
<year>1995</year>
<volume>30</volume>
<page-range>466-73</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pretell-Mazzini]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Murphy]]></surname>
<given-names><![CDATA[RF]]></given-names>
</name>
<name>
<surname><![CDATA[Kushare]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Dormans]]></surname>
<given-names><![CDATA[JP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Unicameral bone cysts:general characteristics and management controversies]]></article-title>
<source><![CDATA[J Am Acad Orthop Surg]]></source>
<year>2014</year>
<volume>22</volume>
<page-range>295-303</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Burningham]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Hashibe]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Spector]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Schiffman]]></surname>
<given-names><![CDATA[JD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The epidemiology of sarcoma]]></article-title>
<source><![CDATA[Clin Sarcoma Res]]></source>
<year>2012</year>
<volume>2</volume>
<page-range>14</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rech]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Castro Jr]]></surname>
<given-names><![CDATA[CG]]></given-names>
</name>
<name>
<surname><![CDATA[Mattei]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Gregianin]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Di Leone]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[David]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical features in osteosarcoma an prognostic implications]]></article-title>
<source><![CDATA[J Pediatr (Rio J)]]></source>
<year>2004</year>
<volume>80</volume>
<page-range>65-70</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Damron]]></surname>
<given-names><![CDATA[TA]]></given-names>
</name>
<name>
<surname><![CDATA[Ward]]></surname>
<given-names><![CDATA[WG]]></given-names>
</name>
<name>
<surname><![CDATA[Stewart]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Osteosarcoma, chondrosarcoma and Ewing's sarcoma:National Cancer Data Base Report]]></article-title>
<source><![CDATA[Clin Orthop Relat Res]]></source>
<year>2007</year>
<volume>459</volume>
<page-range>40-7</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Baena-Ocampo]]></surname>
<given-names><![CDATA[LC]]></given-names>
</name>
<name>
<surname><![CDATA[Ramírez-Pérez]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Linares-González]]></surname>
<given-names><![CDATA[LM]]></given-names>
</name>
<name>
<surname><![CDATA[Delgado-Chávez]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Epidemiology of bone tumors in Mexico City:retrospective clinicopathologic study of 566 patients at a referral institution]]></article-title>
<source><![CDATA[Ann Diagn Pathol]]></source>
<year>2009</year>
<volume>13</volume>
<page-range>16-21</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Widhe]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Widhe]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Initial symptoms and clinical features in osteosarcoma and Ewing sarcoma]]></article-title>
<source><![CDATA[J Bone Joint Surg]]></source>
<year>2000</year>
<volume>82-A</volume>
<page-range>667-74</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
