endothelioma
en·do·the·li·o·ma
noun \-ˌthē-lē-ˈō-mə\plural ; en·do·the·li·o·masalso ; en·do·the·li·o·ma·ta \-mət-ə\ (audio pronunciation)
Definition of ENDOTHELIOMA
: a tumor developing from endothelial tissue
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