Two Cases of Partial Oculomotor Nerve Palsy due to Midbrain Infarction

J Korean Neurol Assoc > Volume 18(1); 2000 > Article

Journal of the Korean Neurological Association 2000;18(1): 80-84.

중뇌 뇌경색으로 인한 부분 동안신경 마비 2예

신원철, 이학영 ·이형길 ·이태규 ·장대일 ·정경천

경희대학교 의과대학 신경과학교실

Two Cases of Partial Oculomotor Nerve Palsy due to Midbrain Infarction

Won Chul Shin, M.D., Hak Young Rhee, M.D., Hyung Kil Lee, M.D., Te Gyu Lee, M.D., Dae-Il Chang, M.D., Kyung-Cheon Chung, M.D.

Deparment of Neurology, College of Medicine, Kyung Hee University

Abstract

Traditionally, monocular parital oculomotor pareses are localized to the cavernous sinus or retro-orbital region and are usually caused by diabetes mellitus, 무뎌교는 of the internal carotid artery, inflammation by vrial infection or autoimmune diseases, neuropathy or neuromuscular disesases. Although rare, the monocular partial oculomotor paresis also can be caused by lesions of ventral midbrain because of their particular topographic arrangement. We present 2 cases with fascicular oculomotor nerve involvement from midbrain lesion, who presented with monocular partial ocu-lomotor nerve palsy. One patient showed partial ptosis and slow saccadic movement of the right eye. The other patient showed parital ptosis and limitation of adduction and elevation in the left eye. They had normal pupil size and light reflexes. Brain magnetic resonance images showed focal infarction in the fascicular portion of the oculomotor nerve. J Korean Neurol Assoc 18(1):80~84, 2000 Key Words : Oculomotor nerve, Fascicle, Mesencephalon