PDF(Pubmed)
Abstract：
Posterior fossa localization of a hydatid cyst is uncommon; in these cases, the cyst usually locates in the cerebellum. Localization within the subarachnoid spaces or the cerebrospinal fluid ventricular system is exceptional. In the present report, which appears to be the seventh in the literature, we describe two cases of a hydatid cyst in the cerebellopontine cistern. Magnetic resonance imaging findings revealed a nonneoplastic cystic lesion mimicking an arachnoid cyst. The hydatid nature of the cyst was unexpected preoperatively. In both cases, the cyst was successfully removed using the puncture, aspiration, irrigation, and resection technique via a retrosigmoid approach. Histopathological examination confirmed the cysts to be Echinococcus granulosus in nature. Hydatid cyst may be considered in the differential diagnosis of arachnoid cysts of the cerebellopontine cistern to determine which surgical procedure to perform and to avoid unexpected complications. Previous published cases were also discussed.
摘要：
包虫囊肿的后窝定位并不常见；在这些情况下，囊肿通常位于小脑。蛛网膜下腔或脑脊液心室系统内的定位是例外。在本报告中，这似乎是文献中的第七个，我们描述了2例小脑桥脑池包虫囊肿。磁共振成像结果显示，模仿蛛网膜囊肿的非肿瘤性囊性病变。囊肿的包虫性质在术前是出乎意料的。在这两种情况下，通过穿刺成功切除了囊肿,抽吸,灌溉,通过乙状窦后入路切除技术。组织病理学检查证实囊肿本质上是细粒棘球蚴。在小脑桥脑池的蛛网膜囊肿的鉴别诊断中，可以考虑包虫囊肿，以确定进行哪种外科手术并避免意外并发症。还讨论了以前发表的案例。
