An 88-year old Japanese female with pure red cell aplasia was treated safely and effectively by a combination of thymectomy, cyclosporin A, and erythropoietin. The thymoma was histologically classified as lymphocytic type or cortical type, which are uncommon in cases of a thymoma accompanied by pure red cell aplasia. Immunohistochemical analysis of the thymoma and bone marrow revealed a predominance of CD8(+) cells. Thymectomy alone was ineffective, but cyclosporin A treatment subsequent to thymectomy was safe and effective and resulted in the disappearance of a Vbeta12 bearing T-cell clone in the bone marrow. Additional treatment with erythropoietin enhanced the effects of cyclosporin A and restored the patient's hemoglobin to normal levels. The beneficial effect of cyclosporin A may be attributed not to a broad immunomodulatory effect, but to a local effect on a limited T-cell subset.
|Issue number||6 Suppl|
|Publication status||Published - Jun 2004|
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