lymphadenosis

noun

lymph·​ad·​e·​no·​sis ˌlim-ˌfad-ᵊn-ˈō-səs 

plural lymphadenoses -ˌsēz 

: any of certain abnormalities or diseases affecting the lymphatic system: as

a

: leukosis involving lymphatic tissues

b

: lymphocytic leukemia