Presse Med
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Hyperthyroidism can be associated with various haematological disorders related to several mechanisms. These disorders might be related to the reduced life-span of whole blood components and/or to an autoimmune mechanism. Only one case of pancytopenia has yet been reported. ⋯ All haematological disorders disappeared when patients became euthyroid. In all cases, the haematological abnormalities were quite mild and might have gone unnoticed. Thus, it can be suggested that the frequency of pancytopenia in hyperthyroidism is underestimated.