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(Stroke. 1995;26:1956-1958.)
© 1995 American Heart Association, Inc.

Articles

Sensory Changes in the Ipsilateral Extremity

A Clinical Variant of Lateral Medullary Infarction

Jong S. Kim, MD; Jay H. Lee, MD Myoung C. Lee, MD

From the Department of Neurology, University of Ulsan, Asan Medical Center, Seoul, South Korea.

Correspondence to Jong S. Kim, MD, Department of Neurology, Asan Medical Center, Song-Pa PO Box 145, Seoul 138-600, South Korea.

Background Classically, patients with unilateral lateral medullary infarction exhibit sensory abnormalities over the ipsilateral face and contralateral hemibody. As a variant, bilateral or contralateral facial sensory changes can be seen. However, sensory changes in the ipsilateral extremities are extremely rare.

Case Descriptions We describe three patients with lateral medullary syndrome in whom impaired deep sensation in the ipsilateral limbs was found. MRI results showed that the infarcts were located superficially in the lateral (case 1) and dorsal (cases 2 and 3) areas of the lower medulla, which probably involved the ascending or crossing dorsal column sensory tracts.

Conclusions Although rare, impaired ipsilateral deep sensation is encountered in patients with lateral medullary infarction syndrome.

Key Words: cerebral infarction • lateral medullary syndrome • medulla oblongata • sense

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