Two cases of a neuropathic joint of the elbow due to syringomylia are reported. Case 1 : 54-year-old female. She had painless swelling of her right elbow, and right ulnar nerve palsy. Case 2 : 58-year-old male. He had rapidly progressive swelling of his left elbow without pain. He was introduced to our hospital with the suspicion of a malignant tumor. At first, both cases were diagnosed as osteoarthritis or a soft tissue malignant tumor. Careful neurological examination revealed that these two

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... atients had a peripheral nerve palsy with a cord sign, strongly suggesting syringomyelia as the diagnosis. MRI could detect the extent of syrinx in both cases. We belive that MRI is an useful