Abstract
Background: Hematological malignancies are primary cancers of the blood and blood forming organs. In Sudan, it has been ranked as the second commonest malignancies by about10:100000 for leukemia and 8.2 per 100000 for lymphomas. Objectives: This study was aimed to determine the prevalence of different hematological malignancies in Khartoum and the distribution according to age and gender. Methods: A Retrospective descriptive hospital-based study design was conducted by obtaining the data from Radiation and Isotope Center of Khartoum (RICK). Convenient sampling technique and total coverage of all the cases was performed (total cases was founded to be 2517 patients) presented to (RICK) between the periods of 1-1-2009 to 31-12-2013. Results: About one third of patients (32.4%) were diagnosed as chronic myelogenous leukemia (CML), followed by acute myeloid leukemia (AML) by (24.8%), then chronic lymphocytic leukemia (CLL) and acute lymphoblastic leukemia (ALL) both were (21%). More than (58%) of patients with hematological malignancies were male and the rest were female. More than (58%) of patients with hematological malignancies were male and the rest were female (42%).

Key words: Leukemia, Lymphoma, RICK, Sudan