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Syringomyelia — SCE Neurology MCQ

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ModerateMultiple Sclerosis & CNS InflammationSyringomyeliaSCE Neurology

A 30-year-old woman has bilateral symmetric 'cape' distribution sensory loss (loss of pain/temperature, preserved proprioception), LMN signs in the upper limbs, and UMN signs in the lower limbs. MRI shows a central cystic cavity C3–T2. What is the diagnosis?

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Correct answer: B — Syringomyelia

Syringomyelia: central spinal cord cavity causing dissociated sensory loss (cape distribution), LMN signs at the syrinx level, and UMN signs below. Most commonly associated with Chiari I malformation. A: External compression, not central cavity. B: Tumour would enhance. D: TM shows inflammatory changes. E: NMOSD has different pattern.

Reference: ABN Myelopathy Guidelines