Fortunately, though, about 80 percent of such lumps are benign, or self-contained, many simply being fluid-filled sacks called cysts.
Hata hivyo, kwa bahati nzuri, karibu asilimia 80 ya uvimbe huo ni mbaya, au haujitoshelezi, nyingi zikiwa ni magunia yaliyojaa umaji-maji yanayoitwa cysts.