Res Vestib Sci.  2009 Jun;8(1):52-55.

A Case of Lateral Medullary Syndrome with Ipsilesional Nystagmus due to Intramedullary Hemorrhage

• Sung KB
• Park JY
• Park SA
• Lee TK

Abstract

We report a rare case of primary dorsal medullary hemorrhage showing lateral medullary syndrome with ipsilesional nystagmus. A 41-year woman, presented with the first degree horizontal vestibular nystagmus and ocular tilt reaction to the left in lateral medullary hemorrhagic lesion. Primary medullary hemorrhage is rare and details of the abnormal eye movement in the lesion have never been described well. While most of the reported vestibular nystagmus in the lateral medullary infarction was contralesional., the nystagmus in this case was ipsilesional. This ipsilesional beating of the nystagmus might be explained that either destruction of the rostral part of vestibular nuclei or irritative effect of blood to vestibular nuclei is responsible. In addition, ocular tilt reaction (OTR) can be more important in deciding the side of the lesion in medullary hemorrhage

Keyword

Lateral medullary syndrome; Medulla oblongata, Hemorrhage; Nystagmus,Pathologic

MeSH Terms

Eye Movements
Female
Hemorrhage
Humans
Infarction
Lateral Medullary Syndrome
Vestibular Nuclei