单词	thymoma
释义	thymoma /ˈθʌɪməʊmə / noun (plural thymomas or thymomata /ˈθʌɪməʊmətə/) Medicine A rare, usually benign tumour arising from thymus tissue and sometimes associated with myasthenia gravis.Rare cases of thymomas, thymic carcinomas, and lymphomas have been reported.... About 45% of thymomas are associated with myasthenia gravis. At this point the differential diagnosis included thymoma, teratoma and lymphoma. Origin Early 20th century: from thymus + -oma.
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