Takechi A, Uozumi T, Yamanaka M, Kanazawa J, Hatayama T, Sumida M, Kajima T
Department of Neurosurgery, Hiroshima University School of Medicine.
No Shinkei Geka. 1990 Jun;18(6):551-4.
We experienced a rare case of arachnoid cyst in the right cerebellomedullary cistern. A 59-year-old female was admitted to our clinic because of lower cranial nerve palsy (deviation of uvula to the left side, swallowing disturbance, curtain sign, hoarseness, atrophy of the right sternocleidomastoid muscle, and deviation of the tongue to the right side). MRI demonstrated a mass lesion compressed towards the medulla oblongata in the right cerebellomedullary cistern. MRI was very helpful as a diagnostic tool, since there is no bone object in the posterior fossa. Although by CT cisternography, the arachnoid cyst was thought to have a communication with the surrounding subarachnoid spaces, the cyst wall was removed because of its compressive symptoms on the lower cranial nerves. After the operation, the cyst shrank, and the clinical symptoms were reduced.
我们遇到了一例罕见的右侧小脑延髓池蛛网膜囊肿。一名59岁女性因下颅神经麻痹（悬雍垂偏向左侧、吞咽障碍、幕征、声音嘶哑、右侧胸锁乳突肌萎缩以及舌头偏向右侧）入住我院。磁共振成像（MRI）显示右侧小脑延髓池内有一肿块压迫延髓。由于后颅窝没有骨质结构，MRI作为一种诊断工具非常有用。尽管通过CT脑池造影术，认为蛛网膜囊肿与周围蛛网膜下腔相通，但由于其对下颅神经的压迫症状，囊肿壁被切除。术后，囊肿缩小，临床症状减轻。
