This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skeletal system, Subject name: Radiology
On MRI the differential diagnosis of spinal cord edema is - 
Select and explain. 
A. Myelodysplasia, B. Myelomalacia, C. Myeloschisis, D. Cord tumors
B: Myelomalacia
Answer: B: Myelomalacia 
Explanation: In Myelomalacia, the spinal cord is small and bright due to cord atrophy and gliosis There is no extrinsic compression in myelomalacia Myelomalacia is irreversible.