Ma'anar ƙamus na Multiple Myeloma wani nau'in ciwon daji ne wanda ke shafar ƙwayoyin plasma, wanda wani nau'in farin jini ne da ake samu a cikin kasusuwa. A cikin myeloma da yawa, ƙwayoyin plasma marasa kyau suna taruwa a cikin kasusuwa, suna tattara ƙwayoyin jini masu lafiya kuma suna haifar da lalacewar kashi. Wannan yanayin na iya haifar da alamu iri-iri, da suka haɗa da ciwon kashi, gajiya, anemia, lalacewar koda, da ƙara saurin kamuwa da cututtuka.