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KMID : 0857020100250020221
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Kosin Medical Journal
2010 Volume.25 No. 2 p.221 ~ p.223
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Pontine Tegmental Hemorrhage Presenting with Isolated Hypesthesia in V1 and V2 Dermatomes
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Na Ju-Young
Kim Meyung-Kug
Yoo Bong-Goo
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Abstract
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Pontine tegmental hemorrhage involving the trigeminal tract, the medial lemniscus, and the spinothalamic tract frequently give rise to various sensory dysfunctions. However, isolated hypesthesia confined to certain parts of trigeminal sensory dermatomes is very rare. We experienced a case of impairment of pain and temperature sense over the unilateral ophthalmic (V1) and maxillary (V2) nerve distribution. Brain CT and gradient echo MRI showed a small hemorrhage in the right dorsomedial midpons. The segmental sensory impairment may explain by somatotopic representation of trigeminal nucleus and tract in the ventral to dorsal and cranio-caudal direction.
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KEYWORD
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Pons, Hemorrhage, Trigeminal nerve
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