BACKGROUND AND OBJECTIVE: Considering the importance and incidence of hematologic malignancies and emphasis on chronic lymphoproliferative disorders, the aim of this study was to evaluate the epidemiology and clinicopathology of these hematologic malignancies.
METHODS: In this descriptive cross-sectional study, the information of  the patients referred to Ramsar Imam Sajjad Hospital Oncology Clinic with final diagnosis of chronic lymphoproliferative was studied in 2009-2014, . To determine the type of chronic lymphoproliferative, Bone marrow aspiration , biopsy and flowcytometry were performed. Data were analyzed usin SPSS 20.
FINDINGS: The main complaints of 134 patients was: lymphadenopathy(41.8%), fever and infection (17%), and lethargy and weakness (3.7%). Most patients with chronic lymphoproliferative disorder had Hodgkin's lymphoma (41%), non-Hodgkin lymphoma (35%), Chronic lymphocytic leukemia (22.4) and Hairy cell leukemia (1.5%).
CONCLUSION: Considering the difference in incidence of lymphoproliferative disorders in terms of age, sex, geographical area, and type of malignancy, and considering the valuable role of nurses in educational programs in the three levels of prevention, treatment and rehabilitation, and with regard to the frequency of this disease in Mazandaran, these  results can help nurses and other people of the treatment team to familiar with the risk factors of the disease in educational programs to promote people's awareness about preventive strategies and appropriate measures in suspected cases