37-year-old woman with known dyserythropoiesis who reported pain after trauma Pre-sacral Extramedullary hematopoiesis Lobulated, pre-sacral lesion, similar T1 and T2 hypointense characteristic as the adjacent sacral bodies. Mild bone expansion with T1 hyper-intense foci,, which could be due to prevertebral hematoma and combined fat deposits. Soft tissue density lesion immediately in front of the..