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Bone Marrow Aspiration (BMA) is a procedure that is often used to evaluate patients with haematological disorders including haematological malignancies (HMs) which account for about 6.5% of all cancers worldwide. There is paucity of data on the prevalence and pattern of HMs from BMA cytology in Nigeria. We carried out a retrospective review to determine the prevalence and distribution of HMs among adult patients who had BMA cytology at Benue State University Teaching Hospital (BSUTH) from June 2012 to July 2019. A total of 158 BMA reports extracted from the marrow and clinic medical records were reviewed. Out of 158 adult BMA cytology reports, HMs accounted for 78(49.4%) of all haematological disorders. There was no significant gender difference. The Male 38(48.7%) to Female 40(51.3%) ratio (M:F) was 1:1.1. Their ages ranged from 16 to 85 years with the median age of 54.0 years. Out of the 78 HMs, Lymphoid neoplasms were the most prevalent 47(60.3%), the leukaemias were higher 53/78(67.9%) compared to the non-leukaemic neoplasms. Of the 53 leukaemias, those of chronic lymphoid types were more 24/53(45.3%), followed by the chronic myeloid 15/53(28.3%). Chronic lymphocytic leukaemia (CLL) was the predominant leukaemia 24/53(45.3%) as well as the most prevalent HM 24/78(30.8%), followed by chronic myeloid leukaemia (CML) 19.2%(15/78). Others were myelodysplastic syndrome (MDS) 11.5%(9/78), acute lymphoblastic leukaemia (ALL) 10.3% (8/78), multiple myeloma (MM) 10.3%(8/78), acute myeloblastic leukaemia (AML) 7.7%(6/78), non-Hodgkin's lymphoma (NHL) 6.4%(5/78), Small lymphocytic lymphoma (SLL) 2.6%(2/78) and Hodgkin's lymphoma (HL) 1.3%(1/78). In conclusion, we established high prevalence of HMs among patients who had BMA cytology evaluation at BSUTH with the preponderance of lymphoid malignancies. We advocate for inclusion of HMs in the National Health Insurance Scheme (NHIS) for full implementation and to prioritise provision of modern diagnostic equipments and treatment options for quality and optimal management of leukaemias in the center. Department of Haematology, College of Health Sciences, Benue State University/Teaching Hospital, Makurdi, Nigeria. Oncology and Palliative Care Department, Federal Medical Center, Makurdi, Nigeria. Department of Medical Microbiology, University of Agriculture, Makurdi, Nigeria. Department of Haematology and Blood Transfusion, Benue State University Teaching Hospital, Makurdi, Nigeria. 5 Department of Haematology and Blood Transfusion, Faculty of Basic Clinical Sciences, College of Medical Sciences, Ahmadu Bello University, Zaria, Kaduna State, Nigeria. Correspondence: Dr. Michael Anthony ONOJA

western journal of medical and biomedical science/western journal of medical and biomedical sciences

Prevalence and Nature of Adult Hematological Malignancies Using Bone Marrow Aspiration Cytology in a Tertiary Health Facility: A Seven Year Retrospective Review