METHODS: The archived enhanced MRI files of a male patient were studied.
RESULTS: An infratentorial ring-shaped (RS) SPV was found on the petrosal surface of the right cerebellar hemisphere. It was inserted in the SPS above the internal auditory pore, postero-lateral to the trigeminal pore. The anterior arm of that venous ring received a delicate supratrigeminal plexus of veins from the pontine surface and continued as a single venous trunk on the cerebellar surface.
CONCLUSIONS: Such previously unreported RS-SPV is of utmost importance to be identified before subtemporal transtentorial and retrosigmoid approaches for different neurosurgical reasons.
方法:研究一名男性患者的增强MRI档案。
结果:在右小脑半球的岩面上发现了幕下环形(RS)SPV。它被插入内部听觉孔上方的SPS中,三叉神经孔的后外侧。该静脉环的前臂从脑桥表面接受了精致的心房上静脉丛,并在小脑表面上继续作为单个静脉干。
结论:这种以前未报告的RS-SPV对于不同的神经外科原因,在颞下及幕下和乙状窦后入路之前进行鉴定至关重要。