Research in Vestibular Science

Case Reports

A Case of Posterior Inferior Cerebellar Artery Infarction Presenting with Sudden Hearing Loss and Vertigo: Sang Hyo Lee, Go Woon Kim, Bum Ki Cho, Chang Woo Kim; Res Vestib Sci. 2013;12(4):136-139.

Abstract PDF: Sudden hearing loss and vertigo are the typical presentation of anterior inferior cerebellar artery infarction, but may rarely occur in posterior inferior cerebellar artery (PICA) infarction. Here we describe a 65-year-old man who presented with sudden hearing loss in his left ear and severe vertigo. The diffusion-weighted magnetic resonance imaging revealed acute infarction in the territory of PICA and cerebral angiography showed non-visualization of left vertebral artery. Sudden hearing loss and vertigo may be a presentation of PICA infarction.

A Case of Lateral Medullary Syndrome with Ipsilesional Nystagmus due to Intramedullary Hemorrhage: Ki Bum Sung, Ji Yun Park, Sun Ah Park, Tae Kyeong Lee; Res Vestib Sci. 2009;8(1):52-55.

Abstract PDF: 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. Key Words: Lateral medullary syndrome; Medulla oblongata, Hemorrhage; Nystagmus, Pathologic

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