A case with posterior fossa epidermoid cyst showing audiovestibular symptoms caused by insufficiency of anterior inferior cerebellar artery--usefulness of free DICOM image viewing and processing software.

Acta oto-laryngologica. Supplementum Pub Date : 2009-06-01 DOI:10.1080/00016480902915681

Kenji Takasaki, Hidetaka Kumagami, Akiko Baba, Daisuke Fujiyama, Haruo Takahashi

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引用次数: 1

Abstract

A 58-year-old Japanese man suddenly suffered from vertigo. On physical examination, left-beating horizontal torsional spontaneous nystagmus was observed; the direction did not change with gaze. Other neurotological examinations revealed findings within normal limits except the left side sensorineural hearing loss of approximately 32 dB on average. Diffusion-weighted MRI revealed no infarction in the brain, but demonstrated an epidermoid cyst in the left cerebello-pontine cistern region. Using free digital imaging and communications in medicine (DICOM) image viewing and processing software, it was found that the epidermoid cyst clearly compressed the left anterior inferior cerebellar artery (AICA). Therefore, we speculated that insufficiency of the left AICA caused his audiovestibular symptoms. This new technique used in the present study was considered useful when the site responsible for vertigo is suspected in the cerebello-pontine angle, where anatomic relationships between the nerves and the vessels are complicated.

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小脑前下动脉不全致后窝表皮样囊肿听前庭症状1例——免费DICOM图像查看及处理软件的应用

一名58岁的日本男子突然患上了眩晕症。体格检查:左跳动水平扭性自发性眼球震颤;方向并没有随着凝视而改变。除左侧感音神经性听力损失平均约32 dB外，其他神经学检查结果均在正常范围内。弥散加权MRI显示脑内无梗死，但左侧小脑-桥脑池区有表皮样囊肿。应用免费数字影像与医学通讯(DICOM)图像查看与处理软件，发现表皮样囊肿明显压迫左侧小脑前下动脉(AICA)。因此，我们推测是左AICA功能不全导致了他的听前庭症状。在本研究中使用的这种新技术被认为是有用的，当负责眩晕的部位被怀疑在小脑-桥脑角，神经和血管之间的解剖关系是复杂的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Acta oto-laryngologica. Supplementum

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