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HardHaematologyChronic myeloid leukaemiaca-mccqe1ca-rcpsc-im

A 55-year-old man presents with 3 months of progressive fatigue and early satiety. Physical examination reveals splenomegaly. CBC shows Hb 130 g/L, WBC 80×10⁹/L, platelets 550×10⁹/L. Differential shows myeloid left shift with basophilia. Which diagnosis is most likely?

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