Erythroblastosis fetalis

a grave hemolytic anemia that, in most instances, results from development in an Rh-negative mother of anti-Rh antibody in response to the Rh factor in the (Rh-positive) fetal blood

Description
Erythroblastosis fetalis is characterized by many erythroblasts in the fetal circulation, and often generalized edema (hydrops fetalis) and enlargement of the liver and spleen; the disease is sometimes caused by antibodies for antigens other than Rh. Syn congenital anemia, hemolytic anemia of newborn, neonatal anemia, anemia neonatorum, hemolytic disease of newborn, HDN, fetal erythroblastosis, Rh antigen incompatibility