neoplasm
noun [ C or U ] medical specialized uk/ˈniː.ə.plæz.əm/ us/ˈniː.əˌplæz.əm/
瘤
any abnormal tissue growth that results in a benign (= harmless) or malignant (= likely to result in death if not treated) tumour
a malignant neoplasm 恶性瘤
a benign neoplasm 良性瘤