Narrative review of aplastic anemia-the importance of supportive treatment.

Aplastic anemia (AA) is a rare, life-threatening syndrome of bone marrow failure resulted from bone marrow hypoplasia or aplasia, leading to pancytopenia (not only anemia). The most common cause is an autoimmune reaction of T lymphocytes against hematopoietic stem cells or, less frequently, a congenital defect or acquired damage to these cells, which leads to inhibition of their division and differentiation. AA can develop quickly (within a few days) or slowly (several weeks or months).