cystic hyperplasia


cys·tic hy·per·pla·si·a

formation of multiple retention cysts from obstruction of ducts or glands by hyperplasia of the lining epithelium, as in fibrocystic disease of the breast and metropathia hemorrhagica.

cystic hyperplasia

(1) Fibrocystic disease of breast, see there. 
(2) A nonmalignant histologic change seen in perimenopausal endometria.