Aplastic bone marrow with Cabot rings in blood due to high-dose olmesartan

[摘要] A 67-year-old man with a history of hypertension and chronic obstructive pulmonary disease (COPD) was referred to our hospital becauseof normocytic anaemia (haemoglobin 100 g/L) and thrombocytopenia (27 × 109/L). There were no fever, weight loss, night sweats,and bleeding tendency. There were no signs of lymphadenopathy orhepatosplenomegaly. The blood smear showed multiple Cabot rings (Figure 1, left). Bone marrow biopsy revealed an aplastic bone marrowwithout indications for haematological malignancy (Figure 1, right).