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skos:definition |
NCI: A malignant neoplasm of the thymus, originating from epithelial thymus cells.,NCI: A thymoma that has an aggressive clinical course (capsular invasion, infiltration of the surrounding tissues) and can metastasize. Although any morphologic subtype of thymoma may eventually have a malignant clinical course, this term is most often associated with thymoma types B3 and C.
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