Fine margin between crossed sensory and contralateral sensory loss: A case report.

The well-known sensory deficit in lateral medullary syndrome (LMS) involves crossed ipsilateral trigeminal area and contralateral spinothalamic tract area. A 45 year old man was admitted for sudden onset slurring of speech, unsteadiness and sensory complaints. The diagnosis was right lateral medullary syndrome due to right Vertebral Artery occlusion. In addition to typical lateral medullary syndromes, his sensory deficit involved contralateral half of the face, trunk and limbs. We report this atypical sensory presentation and discuss its neuroanatomical correlation.