Debebe, Tequam (MD, Associate Professor of Radiology)Assefa, Getachewu(MD, Professor of Radiology)Mekonnen, Menbere2021-11-172023-11-052021-11-172023-11-052020-12http://etd.aau.edu.et/handle/123456789/28718Background: Brain metastasis is one of the leading causes of death in cancer patients due to increasing the options of treatment for primary tumors and increasing life span. Brain metastases have different radiological manifestations which may mimic primary tumor and nonmalignant diseases. Therefore, it is important for the radiologist to be familiar with the full spectrum of findings to facilitate correct diagnosis and this study has tried to look for the pattern of brain metastasis. Objective: This study aimed to assess the overall brain metastasis patterns. Methods: A retrospective cross sectional study of 51 patients was done from September 2018-September 2020. A structured questionnaire was used to collect data for analysis. Results: Of the total 51 cases there were 12 primary sites and the majority cases came from the following site in the descending orders breast (22),lung (11),bladder(4),GTD(3),RCC,STS and thyroid each(2) and colonic, endometrial ca melanoma, nasal SCC and thymic ca each (1) Cerebral hemisphere was the commonest site to be involved followed by cerebellum and brain stem. Most common pattern of metastasis was multiple nodular followed by solitary, hemorrhagic, cystic and cavitary Conclusion: cerebral hemisphere metastasis was the commonest brain parts with multinodular pattern and ring enhancement with associated perilesional edema and presence of diffusion restriction for more than half casesen-USBrain metastasis,Patients,RadiologyThesis