THE CHARACTTERISTICS OF B-CELL LYMPHOMAS INVOLVEMENT IN THE BONE MARROW
Main Article Content
Abstract
Introduction: Bone marrow examination is an integral part of the clinical staging of lymphoma, also prognosis and therapeutic strategies. Objective: This study aimed to evaluate the incidence and characteristics of bone marrow involvement of B-cell lymphoma on trephine biopsy. Subjects and Methods: Cross section description of B-cell lymphoma from January 2019 to December 2020 at Blood Transfusion Hematology Hospital. The incidence and pattern of bone marrow involvement were analyzed. Results: The frequency of bone marrow involvement of B-cell lymphomas was 64.8%. Bone marrow involvement was present in 80% of low-grade B-cell lymphomas, and 40% of high-grade variants. The highest incidence of bone marrow involvement was seen in LPL and BL (100%) and the lowest was found in DLBCL (25.6%). Diffused pattern of infiltration was predominant (53%), followed by mixed pattern (31%). Typical bone marrow involvement in 50% FL and 10% DLBCL (transformed FL to DLBCL) was characterized by paratrabecular infiltration. Intrasinusoidal infiltration was not detected. The most frequent pattern was mixed pattern (72.2%) found in MZL. Conclusion: The frequency of bone marrow involvement of low-grade B-cell lymphomas was higher than high-grade variants. The pattern of diffuse infiltration was predominantly.
Article Details
Keywords
B-cell lymphoma, paratrabecular infiltration, random focal infiltration, diffuse infiltration, interstitial infiltration, intrasinusoidal infiltration, mixed infiltration
References
2. Brunning R. D., McKenna R. W., Bloomfield C. D. et al. (1977), "Bone marrow involvement in Burkitt's lymphoma", Cancer. 40 (4), pp. 1771-1779.
3. Hassan K., Ikram N., Bukhari K. P. et al. (1995), "The Pattern of Bone Marrow Infiltration in Non-Hodgkin’s Lymphornas", .
4. Lambertenghi-Deliliers G., Annaloro C., Soligo D. et al. (1992), "Incidence and histological features of bone marrow involvement in malignant lymphomas", Annals of hematology. 65 (2), pp. 61-65.
5. Orazi A., Foucar K., Knowles D. et al. (2013), "Knowles neoplastic hematopathology", Lippincott Williams & Wilkins, pp. 399-583.
6. Shi Y. F., Li X. H., Song Y. Q. et al. (2015), "Involvement of bone marrow in lymphoma: pathological investigation in a single-center from northern China", International journal of clinical and experimental pathology. 8 (6), pp. 7102.
7. Swerdlow S. H., Campo E., Harris N. L. et al. (2016), "WHO Classification of Tumours of Haematopoietic and Lymphoid Tissues", pp. 216-344.
8. Yao Z., Deng L., Xu-Monette Z. Y. et al. (2018), "Concordant bone marrow involvement of diffuse large B-cell lymphoma represents a distinct clinical and biological entity in the era of immunotherapy", Leukemia. 32 (2), pp. 353-363.