Akaishi K, Hongo K, Tanaka Y, Kobayashi S
Department of Neurosurgery, Shinshu University School of Medicine, Matsumoto, Japan.
J Clin Neurosci. 2001 Sep;8(5):452-4. doi: 10.1054/jocn.2000.0855.
A cerebellopontine angle meningioma originating from the skull base over a high jugular bulb is quite rare. We report a case of a 68-year-old woman who had a right cerebellopontine angle meningioma with a prominent high jugular bulb. CT and MRI revealed a round tumour which attached to a bony prominence over the high jugular bulb. The apex of the jugular bulb was 3 mm higher than the floor of the internal auditory canal. The tumour was removed via a suboccipital retrosigmoid approach. The bony projection was drilled off carefully using a diamond drill; the jugular bulb became visible through the thinned bone. When a meningioma of this type is removed including bony changes, special attention is needed to avoid injury to the jugular bulb.
起源于高位颈静脉球上方颅底的桥小脑角脑膜瘤相当罕见。我们报告一例68岁女性，患有右侧桥小脑角脑膜瘤，伴有明显的高位颈静脉球。CT和MRI显示一个圆形肿瘤附着于高位颈静脉球上方的骨质隆起处。颈静脉球的顶点比内耳道底高3毫米。通过枕下乙状窦后入路切除肿瘤。使用金刚钻小心磨除骨质突起；透过变薄的骨质可见颈静脉球。当切除这种类型的脑膜瘤并包括骨质改变时，需要特别注意避免损伤颈静脉球。
