leukosarcoma

noun

leu·​ko·​sar·​co·​ma

variants or chiefly British leucosarcoma

ˌlü-kō-sär-ˈkō-mə 

plural leukosarcomas also leukosarcomata -mət-ə 

: lymphosarcoma accompanied by leukemia

leukosarcomatosis noun

or chiefly British leucosarcomatosis

-sär-ˌkō-mə-ˈtō-səs 

plural leukosarcomatoses -ˌsēz