Posterior Petrous Meningioma Fed by a Branch of the Persistent Trigeminal Artery Terminating in the Anterior Inferior Cerebellar Artery
Posterior Petrous Meningioma Fed by a Branch of the Persistent Trigeminal Artery Terminating in the Anterior Inferior Cerebellar Artery
复制标题
岩部后脑膜瘤由终止于小脑前下动脉的持续三叉动脉分支供血
DOI：
10.1016/j.wneu.2021.02.073
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发表时间：
2021
影响因子：
2
通讯作者：
Takeshima Hideo
中科院分区：
文献类型：
--
作者：
Suematsu Yuuki;Watanabe Takashi;Takeshima Hideo
持续性三叉动脉（PTA）是最常见的持续性颈动脉-基底动脉胎儿吻合，很少直接终止于小脑前下动脉（AICA）的优势半球分支。我们报告一例这种PTA变体的分支（Saltzman 3b型）被证明是一个大的后岩性脑膜瘤的供血动脉，在手术中通过扩展乙状结肠后入路在直视下证实了这一点。从肿瘤表面进行细致的解剖，可以早期识别PTA的供血分支及其在颈静脉孔附近后岩面附着处的分叉，从而保存小脑半球皮层末梢分支。后颅窝的脑膜瘤可能从终止于AICA的PTA分支获得大量供应。在手术切除后窝肿瘤时应注意这种PTA变异，以防止AICA区域的缺血性并发症。
Persistent trigeminal artery (PTA) is the most common persistent carotid-basilar fetal anastomosis and terminates extremely rarely directly in the dominant hemispheric branch of the anterior inferior cerebellar artery (AICA). We present a case of a branch of this PTA variant (Saltzman type 3b) demonstrated as the feeding artery of a large posterior petrous meningioma, which was confirmed under direct vision during surgery through the extended retrosigmoid approach. Meticulous dissection from the tumor surface provided early identification of the feeding branch from the PTA and its bifurcation at the attachment of the posterior petrous surface adjacent to the jugular foramen enabled preservation of the terminal cortical branch of the cerebellar hemisphere. Meningioma in the posterior cranial fossa may recruit substantial supply from branches of the PTA terminating in the AICA. This PTA variant should be recognized during surgical resection of posterior fossa neoplasms to prevent ischemic complication of the AICA territory.