This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Anatomy
[{'content': 'Dissoscited sensory loss is seen in \nSelect and explain. \nA. Synringomyelia, B. Viatmain B12 deficiency, C. Transverse myelitis, D. Pellagra', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Refer Robbins page no 1258 Syringomyelia is a generic term referring to a disorder in which a cyst or cavity forms within the spinal cord. This cyst, called a syrinx, can expand and elongate over time, destroying the spinal cord. The damage may result in loss of feeling, paralysis, weakness, and stiffness in the back, shoulders, and extremities.', 'role': 'assistant'}]