<n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>Stage IIA Carcinoma of the Esophagus</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>Stage IIA Esophageal Carcinoma</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>Stage IIA Esophageal Cancer</n0:term-name><n0:term-group>PT</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>Stage IIA Esophagus Carcinoma</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>Stage IIA Carcinoma of Esophagus</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>Stage IIA Esophageal Cancer AJCC v7</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>Esophageal Cancer Stage IIA</n0:term-name><n0:term-group>SY</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>Stage IIA includes: For squamous cell carcinoma: (T2-3, N0, M0, G1, GX, Tumor location: Upper, middle); (T2-3, N0, M0, G2-3, Tumor location: Lower, X). For adenocarcinoma: (T2, N0, M0, G3). T2: Tumor invades muscularis propria. T3: Tumor invades adventitia. N0: No regional lymph node metastasis. M0: No distant metastasis. G1: Well differentiated. GX: Grade cannot be assessed-stage grouping as G1. G2: Moderately differentiated. G3: Poorly differentiated. Tumor location: Location of the primary cancer site is defined by the position of the upper (proximal) edge of the tumor in the esophagus. (AJCC 7th ed.)</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>