Prevalence of Central Nervous System Tumors - A Single Center Ten Years Study in Tabriz Imam Khomeini Hospital

Central Nervous System (CNS) tumors are those neoplastic diseases, that involving brain, spinal cord and meanings. They could be primary CNS tumors or metastatic tumors. Incidence of CNS tumors varies in different reports depending on the frequency of different age, gender and studied population. In this report we studied the frequency of different central nervous system (CNS) tumors in different age and gender during last 10 years in single center university hospital. Methods and Materials: Retrospectively, we studied the prevalence and type of different CNS tumors operated in the main university hospital of Tabriz University of Medical Sciences, during a ten year period from 1997-2006. From total of 1781 patients with CNS tumors, 51/6% of tumors occurred in men and 48/4% in women. The most common ages period was 4-6 decade of life. 92/6% had tumors in brain, and 7/4% in spinal cord. 1180 cases of brain tumors were primary CNS (97/6%) and remainder were metastatic. The most common primary CNS tumor in adults was astrocytic tumors (29/6%). The result of this study showed that primary brain tumors were more prevalence than methastatic. Astrocytic tumors were the most primary tumor in adult.