Paroxysmal kinesigenic choreoathetosis because of cryptogenic myelitis. Remission with carbamazepine and the pathogenetic role of altered sodium channels.

Lesions of the spinal cord causing paroxysmal kinesigenic choreoathetosis are rare and most of the reported cases have been because of multiple sclerosis. We now describe this movement disorder occurring in a patient who developed a myelitis of unknown aetiology. A typically striking remission followed treatment with carbamazepine.

Triplication of the thumb.

A child with triplication of the thumb is presented. Each thumb was fully developed with neurovascular bundles, flexor and extensor tendons. Although all three thumbs were triphalangeal, they shared a common metacarpal and two shared a common proximal phalanx.

MRI of the spinal cord in myelopathy complicating vitamin B12 deficiency: two additional cases and a review of the literature.

Focal spinal cord lesions have been present in all previously reported cases of MRI appearances in myelopathy complicating vitamin B12 deficiency. We describe two further cases showing mild atrophy only and review the salient features of the previous 11 publications. MRI findings reflect quite closely the known pathological changes in this condition.