Aggouri Mohammed, Boujraf Said A, Benzagmout Mohammed, Chaoui Mohammed E
Department of Neurosurgery, University Hospital of Fez, Fez, Morocco.
Neurosciences (Riyadh). 2010 Oct;15(4):277-9.
Arachnoid cysts of the posterior fossa are uncommon. Our case of a 49-year-old man presented with a 2 month history of headaches, nausea, and vertigo associated with walking instability. An MRI revealed a median well-circumscribed cystic lesion of the posterior fossa, with similar signal characteristics to CSF, and without connection to the fourth ventricle. This aspect suggested either arachnoid or hydatid cysts. Direct open surgery was performed allowing complete removal of the cyst wall, with a good outcome.
后颅窝蛛网膜囊肿并不常见。我们的病例是一名49岁男性，有2个月的头痛、恶心和眩晕病史，伴有行走不稳。磁共振成像（MRI）显示后颅窝有一个边界清晰的中位囊性病变，信号特征与脑脊液相似，且与第四脑室无连接。这一表现提示为蛛网膜囊肿或包虫囊肿。进行了直接开放手术，完整切除了囊肿壁，效果良好。
