Prevalence of primary CNS tumors in a diagnostic setup in Nairobi, Kenya

Introduction: Diagnosis of CNS tumors is often difficult for the general pathologist due to its rarity. However, high morbidity and mortality makes this the dreaded form of cancer and diagnosis requires precision to differentiate the various forms including secondaries. Materials and Methods: Study was conducted in an independent laboratory over a period of 6 months in Nairobi, Kenya and all primary CNS neoplasms during the study period were included in the study. Result: Amongst 42 lesions involving the CNS, 34 primary CNS neoplasms were identified. It was more common in females with a mean age of 49.41 years. Meningiomas were the most common type of CNS lesions followed by astrocytic tumors. Conclusion: Incidence of meningiomas is high in the African population. Light microscopy is essential for initial diagnosis, however, immunohistochemistry, ultrastructural studies including molecular studies are essential to predict further management.