_:vb50951723 "A thymus cancer that derives_from epithelial cells. The tumor cells in a thymic carcinoma look very different from the normal cells of the thymus, grow more quickly, and have usually spread to other parts of the body when the cancer is found."^^ . _:vb50951723 . _:vb50951723 . _:vb50951723 "url:http://www.cancer.gov/cancertopics/pdq/treatment/thymoma/patient/page1"^^ . _:vb50951723 . _:vb50951723 . _:vb50951723 .