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December 1991

Posttraumatic Pontine Truncal Sensory Level

Author Affiliations

Department of Neurology Massachusetts General Hospital Harvard Medical School Boston, MA 02114

Arch Neurol. 1991;48(12):1216. doi:10.1001/archneur.1991.00530240018009

To the Editor.  —Truncal sensory levels are usually associated with spinal cord lesions, although they also occur in patients who have had pontine and medullary infarcts1-3 and in patients who have undergone surgical spinothalamic tractotomy at the level of the pons4 or medulla5 for relief of intractable pain. We know of no previously reported cases of a truncal sensory level following traumatic injury of the pons, however; therefore, we report the following case.

Report of a Case.  —A 22-year-old male pedestrian was hit by a car. He was drowsy but oriented with 5-mm pupils that reacted sluggishly to light and better to near, with limited up-gaze and bilateral sixth-nerve palsies. There was right facial weakness of the central type; the right arm and leg were plegic except for a trace contraction in the leg proximally. There was flaccid paralysis of the left foot. Pinprick and sensation of

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