This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous System, Subject name: Pathology
[{'content': 'New born baby with lumbar mass. Diagnosis. \nSelect and explain. \nA. Myelocele, B. Lumbar meningomyelocele, C. Spina bifida, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Lumbar meningomyelocele*The lumbar region of a newborn baby with myelomeningocele. The skin is intact, and the placode-containing remnants of nervous tissue can be observed in the center of the lesion, which is filled with cerebrospinal fluid.', 'role': 'assistant'}]