<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>A fast-growing type of central nervous system tumor that forms from glial (supportive) tissue of the brain and spinal cord and has cells that look very different from normal cells. GBM usually occurs in adults and affects the brain more often than the spinal cord.</n0:def-definition><n0:def-source>NCI-GLOSS</n0:def-source></n0:ComplexDefinition>
nci:P334
9440/3
nci:P363
Malignant
nci:P366
Glioblastoma
nci:P90
<n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>Glioblastoma multiforme</n0:term-name><n0:term-group>PT</n0:term-group><n0:term-source>CTEP</n0:term-source><n0:source-code>10018337</n0:source-code></n0:ComplexTerm><n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>Spongioblastoma Multiforme</n0:term-name><n0:term-group>SY</n0:term-group><n0:term-source>NCI</n0:term-source></n0:ComplexTerm><n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>glioblastoma multiforme</n0:term-name><n0:term-group>PT</n0:term-group><n0:term-source>NCI-GLOSS</n0:term-source><n0:source-code>CDR0000045699</n0:source-code></n0:ComplexTerm><n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>grade IV astrocytoma</n0:term-name><n0:term-group>PT</n0:term-group><n0:term-source>NCI-GLOSS</n0:term-source><n0:source-code>CDR0000044407</n0:source-code></n0:ComplexTerm><n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>GBM (Glioblastoma)</n0:term-name><n0:term-group>SY</n0:term-group><n0:term-source>NCI</n0:term-source></n0:ComplexTerm><n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>Glioblastoma</n0:term-name><n0:term-group>SY</n0:term-group><n0:term-source>NCI</n0:term-source><n0:source-code>TCGA</n0:source-code></n0:ComplexTerm><n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>glioblastoma</n0:term-name><n0:term-group>PT</n0:term-group><n0:term-source>NCI-GLOSS</n0:term-source><n0:source-code>CDR0000045698</n0:source-code></n0:ComplexTerm><n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>Grade IV Astrocytic Tumor</n0:term-name><n0:term-group>SY</n0:term-group><n0:term-source>NCI</n0:term-source></n0:ComplexTerm><n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>Glioblastoma Multiforme</n0:term-name><n0:term-group>SY</n0:term-group><n0:term-source>NCI</n0:term-source></n0:ComplexTerm><n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>Grade IV Astrocytic Neoplasm</n0:term-name><n0:term-group>SY</n0:term-group><n0:term-source>NCI</n0:term-source></n0:ComplexTerm><n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>GBM</n0:term-name><n0:term-group>PT</n0:term-group><n0:term-source>NCI-GLOSS</n0:term-source><n0:source-code>CDR0000539131</n0:source-code></n0:ComplexTerm><n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>Glioblastoma</n0:term-name><n0:term-group>PT</n0:term-group><n0:term-source>NCI</n0:term-source></n0:ComplexTerm>
nci:P97
<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>The most malignant astrocytic tumor (WHO grade IV). It is composed of poorly differentiated neoplastic astrocytes and it is characterized by the presence of cellular polymorphism, nuclear atypia, brisk mitotic activity, vascular thrombosis, microvascular proliferation and necrosis. It typically affects adults and is preferentially located in the cerebral hemispheres. It may develop from diffuse astrocytoma WHO grade II or anaplastic astrocytoma (secondary glioblastoma), but more frequently, it manifests after a short clinical history de novo, without evidence of a less malignant precursor lesion (primary glioblastoma). Two histologic variants are recognized: giant cell glioblastoma and gliosarcoma. (WHO)</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>