Nishimura K, et al. - This study coveted an inspection of the effect of bone marrow involvement by malignant lymphoma (BMI) on laboratory data. It also identified the useful laboratory markers for diagnosing BMI. Based on the findings, it was deduced that peripheral blood involvement by malignant lymphoma (PBI), platelets in peripheral blood (PLT), soluble interleukin-2 receptor (sIL2R), and megakaryocyte count in bone marrow (MgK could serve as useful laboratory markers for BMI diagnosis.