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題名 | 第四腦室表皮樣囊腫--病例報告=Epidermoid Cyst of the Fourth Ventricle--Case Report |
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作者 | 林敬原; 楊怡和; 林昭佑; Lin, Ching-yuan; Young, Yi-ho; Lin, Chao-yu; |
期刊 | 中華民國耳鼻喉科醫學雜誌 |
出版日期 | 19990500、19990600 |
卷期 | 34:3 民88.05-06 |
頁次 | 頁249-252 |
分類號 | 416.291 |
語文 | chi |
關鍵詞 | 表皮樣囊腫; 第4腦室; 運動失調; 顱內腫瘤; Epidermoid cyst; Fourth ventricle; Ataxia; Intracranial tumor; |
中文摘要 | 顱內表皮樣囊腫,臨床上罕見,僅占所有顱內腫瘤的百分之一。而位於第4腦室 之顱內表皮樣囊腫則更為稀少且多以運動失調之小腦徵象為始發症狀。本科最近經驗1例僅 以眩暈及兩側性注視眼振為表現的第4腦室腫瘤,不伴有其他小腦或腦幹之神經學症狀。病 人轉介至神經外科接受正中枕下開顱取出腫瘤,病理報告為表皮樣囊腫。故當眩暈患者伴有 持續地兩側性注視眼振,且眼振電圖檢查出現許多異常徵象時,須懷疑中樞性病變之可能性, 而安排核磁共振影像掃描以證實之。 |
英文摘要 | Intracranial epidermoid cyst is unusual. It represents only 1% of intracranial tumors. An epidemoid cyst located in the fourth ventricle is exceedingly rare. It often causes cerebellar ataxia. We reported a 37 year-old woman presented to us with postural headache and persistent vertigo for 2 years. Neurological examination revealed normal cerebellar function; however, bilateral gaze nystagmus was noted in the neurotological testing. Magnetic resonance imaging disclosed a huge space-occupying lesion in the fourth ventricle, which was pathologically proved to be an epidermoid cyst after surgery. The tumor was excised totally via median suboccipital craniotomy. The postoperative course was smooth except left abducens nerve palsy and mild ataxia. From the clinical experience with this case, we suggest that a fourth ventricle lesion should also be suspected if a patient has persistent vertigo and postural headache, even without ataxia. |
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