acquired pure red cell aplasia
(uh-KWY-erd … sel uh-PLAY-zhuh)
A rare disorder in which the bone marrow makes almost no red blood cells. It may be caused by infection or by certain drugs. Patients with this disorder may also have a thymoma (a tumor of the thymus) or an autoimmune condition such as lupus erythematosus or rheumatoid arthritis.