[Incidence of Bone Marrow Involvement in Different Pathological Type Lymphoma Patients].

OBJECTIVE: To analyze the incidence of bone marrow involvement in patients with different pathological types of lymphoma.

METHODS: The results of bone marrow tests including bone marrow aspiration(BMA), flow cytometry detection, bone marrow biopsy(BMB) and 18 F-FDG PET/CT, were analyzed retrospectively in 702 cases of newly diagnosed lymphoma with bone marrow assessment in our hospital from October 2000 to September 2016. If one of the above-mentioned 4 tests showed positive, the lymphoma patient was judged as bone marrow involved.

RESULTS: The incidence of bone marrow involvement (BMI ) in the patients with NHL was much higher than that in patients with HL [32.6 %(201/616) vs 15%(13/86)](P<0.05). For patients with NHL, the incidence of bone marrow involvement in B-cell lymphoma was higher than that in T-cell lymphoma (37.0% vs 22.6%)(P<0.05). According to different pathological types, the incidences of BMI in the patient with mantle cell lymphoma, hepatosplenic T-cell lymphoma, diffuse large B-cell lymphoma (DLBCL) and follical lymphoma (FL) were 88% (25/22), 100% (5/5), 21.8% (56/257), and 38.5% (15/39) , respectively.

CONCLUSION: The incidence of bone marrow involvement varies in different pathological types of lymphoma.Bone marrow assessment has significant importance for stading of newly diagnosed lymphoma patients.