Isolated Unilateral Adduction Paresis of the Right Eye Due to a Contusion in the Subnucleus of Oculomotor Nerve
Ismail Gülşen
Department of Neurosurgery, School of Medicine, Yüzüncü Yıl University, Van, Turkey.
Ak Hakan *
Department of Neurosurgery, School of Medicine, Bozok University, Yozgat, Turkey.
Mehmet Deniz Bulut
Department of Radiology, School of Medicine, Yüzüncü Yıl University, Van, Turkey.
Gökhan Evcili
Department of Neurology, Derince Research and Teaching Hospital, Kocaeli, Turkey.
Nermin Tanık
Department of Neurology, School of Medicine, Bozok University, Yozgat, Turkey.
*Author to whom correspondence should be addressed.
Abstract
In this report we present a 45 year old man with horizontal diplopia following minor head trauma. Neurological examination was normal except for unilateral adduction paresis of the right eye. Brain magnetic resonance imaging (MRI) revealed a contusion area 7 mm in diameter at the inferior-posterior portion of the mesencephalon. We thought that this contusion affected the sub-nucleus of oculomotor nerve and caused isolated adduction paresis of the right eye. This relatively rare entity is discussed in the light of the available literature.
Keywords: Adduction paresis, contusion injury, subnucleus, oculumotor nerve