Case Report: Hemophagocytic lymphohistiocytosis secondary to Escherichia coli infiltration of bone marrow in a patient with seronegative rheumatoid arthritis treated with low-dose methotrexate - Poll - MDSpire

Case Report: Hemophagocytic lymphohistiocytosis secondary to Escherichia coli infiltration of bone marrow in a patient with seronegative rheumatoid arthritis treated with low-dose methotrexate

  • By

  • Ziping Liu

  • Fengjian Li

  • Yunhong Liu

  • Xueyan Chen

  • July 13, 2026

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