Hagos BilutTesfaye Negi2025-03-202025-03-202024-10-19https://etd.aau.edu.et/handle/123456789/5146Posterior fossa tumors are frequently cause hydrocephalus, which can be obstructive or communicating. After tumor removal, only some patients require permanent Cerebro-Spinal Fluid (CSF) diversion, and the best approach to managing hydrocephalus in these cases remains debated. While some advocate for initial CSF diversion, others favor early tumor resection. In low-income settings with high patient volumes, early tumor resection is often challengingen-USpermanent cerebro-spinal fluid diversionThesis