Pure Motor quadriplegia in Bilateral Medial Medullary Syndrome

J Korean Neurol Assoc > Volume 14(1); 1996 > Article

Journal of the Korean Neurological Association 1996;14(1): 295-297.

순수 우동성 사지 마비를 보인 양측성 내측연수 증후군 1례

문태순, 이영기, 신동진

중앙 길병원 신경과

Pure Motor quadriplegia in Bilateral Medial Medullary Syndrome

Tae-Sun Moon, M.D., Young-Ki Lee, M.D., Dong-Jin Shin, M.D.

Department of Neurology, Chung-Ang Gil Hospital

Abstract

Medullary pyramid is the one place where corticospinal fibers are isolated as the pyramidal tract, and the result of such lesions has been a flaccid hemiplegia. Medial medullary syndrome may occur bilaterally, resulting in flaccid quadriplegia with facial sparing, bilateral lower motor neuron signs of the tongue, and complete loss of position and vibratory sensation affecting all for extremities. Occasionally, only the pyramid is damaged, resulting in a pure motor quadriplegia without other medullary signs. We report a 78-year-old man who suddenly developed flaccid quadriplegia without any other medullary signs. Brain MRI showed bilateral medial medullary infarctions that was probably due to anterior spinal artery occlusion.