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Long-term remission of pure red cell aplasia after plasma exchange and lymphocytapheresis.

A 57-year-old man with idiopathic pure red cell aplasia went into remission after plasma exchange. He relapsed after 5 months and then failed to respond to treatment with intensive plasma exchange and immunosuppressive agents. Because of a high proportion of T-suppressor cells in the peripheral blood he was treated with lymphocytapheresis in addition to the previous treatment. The patient achieved a long-term haematological remission which has now persisted for more than 3 yr.