| thrombocythaemia | <haematology> Over-production of platelets. See: essential thrombocythaemia. (15 Oct 1997) |
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| essential thrombocythaemia | A rare condition related to polycythaemia rubra vera characterised by the production of large numbers of abnormal platelets. Symptoms include haemorrhage, blood clots and enlargement of the spleen. Treatment varies according to the severity of the disease. (13 Nov 1997) |
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