This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Musculoskeletal Radiology, Subject name: Radiology
[{'content': 'On MRI, the differential diagnosis of spinal cord edema is: \nSelect and explain. \nA. Myelodysplasia, B. Myelomalacia, C. Myeloschisis, D. Cord tumors', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Myelomalacia is a increased T2w signal in the spinal cord where the spinal cord is atrophic with gliosis producing small and bright appearence of spinal cord', 'role': 'assistant'}]