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Journal of Cancer Research and Therapeutics
Medknow Publications on behalf of the Association of Radiation Oncologists of India (AROI)
ISSN: 0973-1482
EISSN: 0973-1482
Vol. 3, No. 1, 2007, pp. 43-46
Bioline Code: cr07011
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Cancer Research and Therapeutics, Vol. 3, No. 1, 2007, pp. 43-46

 en Brief Communications - Myelodysplastic syndrome and pancytopenia responding to treatment of hyperthyroidism: Peripheral blood and bone marrow analysis before and after antihormonal treatment
Akoum Riad, Michel Saade, Wafic Tabbara, Emile Brihi, Marwan Masri, Khaled Habib, Gerard Abadjian

Abstract

Hematological disorders, especially single lineage abnormalities, have been described in hyperthyroidism. Pancytopenia has been reported, without myelodysplastic syndrome or megaloblastic anemia. We studied the peripheral blood smear and the bone marrow aspiration and biopsy of a 65-year-old lady, who presented with pancytopenia and thyrotoxicosis due to multinodular goiter. She denied ingesting any toxic medication. At diagnosis: WBC: 2500 /ul, platelets count: 58.000/ul, hemoglobin level: 6.5 g/dl. The bone marrow was moderately hyper cellular with moderate myelofibrosis and arrested hematopoiesis. The TSH level was: 0.02 mIU/l (N: 0.25-4), the fT3: 18 pmol/l (N: 4-10), the routine serum immunologic tests were negative. After treatment with single agent neomercazole (carbimazole), complete recovery of the blood cell counts was obtained within one month. The bone marrow aspiration, performed three months after starting therapy, showed normal hematopoiesis. The thyroid function tests returned to normal and no autoimmune reaction was detected on routine serum testing. Persistent response was observed six months later under medical treatment. The patient has refused surgical treatment. Reversible myelodysplastic syndrome may also be part of the changes in blood picture of patients with hyperthyroidism, probably due to direct toxic mechanism.

Keywords
Hyperthyroidism, myelodysplastic syndrome, pancytopenia, reversible

 
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