Intractable Rare Dis Res. 2017;6(1):69-71. (DOI: 10.5582/irdr.2016.01080)

Thrombocytosis in a patient with upper gastrointestinal bleeding.

Qi X, De Stefano V, Shao X, Guo X

Reported here is a case of upper gastrointestinal bleeding secondary to a peptic ulcer involving an extremely high platelet count of 989 × 109/L. Myeloproliferative neoplasms were ruled out on the basis of gene mutation testing and a bone marrow biopsy. After the cessation of index bleeding, the platelet count decreased markedly. Thus, reactive thrombocytosis was considered as a possibility.

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