Department of Neurosurgery, Clinical Research Institute, National Hospital Organization Kyushu Medical Center, Fukuoka, Japan.
Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Oper Neurosurg (Hagerstown). 2021 Jul 15;21(2):E83-E88. doi: 10.1093/ons/opab099.
The inferior petroclival vein (IPV) courses along the extracranial surface of the petroclival fissure. It is occasionally involved in vascular diseases and has recently been used for vascular access to the cavernous sinus. However, detailed descriptions of its anatomy are currently lacking.
To define the anatomic relationship between the IPV and its surrounding structures based on cadaveric dissection and radiological analysis.
A dry skull and an injected cadaver head were examined to reveal the relationships between the IPV and its surrounding structures. The existence of the IPV and its relationships with other venous structures were also examined by contrast-enhanced, fat-suppressed T1-weighted magnetic resonance imaging in 26 patients (51 sides).
The entire course of the IPV was shown via stepwise cadaver dissection from below. Its relationships with surrounding structures, such as the jugular bulb, sigmoid sinus, inferior petrosal sinus, petrosal venous confluence, and the posterior, lateral, and anterior condylar veins, were also shown. In the radiological analysis, the IPV was identified on all sides. The rostral end of the vein was connected to the venous plexus around the carotid artery on all sides. The vein drained into the caudal end of the inferior petrosal sinus (49/51 sides, 96.1%) or into the anterior condylar vein (2/51 sides, 3.9%).
A precise understanding of the anatomy of the IPV will enable endovascular and skull base surgeons to achieve diagnoses and gain safe access to lesions involving the IPV.
下岩静脉（IPV）沿着岩斜裂的颅外表面走行。它偶尔会涉及血管疾病，并且最近已被用于进入海绵窦的血管通路。然而，目前缺乏对其解剖结构的详细描述。
基于尸体解剖和放射学分析，定义 IPV 与其周围结构的解剖关系。
检查干颅骨和注入的尸体头部，以揭示 IPV 与其周围结构之间的关系。通过对比增强、脂肪抑制 T1 加权磁共振成像检查 26 例患者（51 侧），检查 IPV 的存在及其与其他静脉结构的关系。
通过逐步的尸体解剖，从下方显示了整个 IPV 的行程。还显示了其与周围结构的关系，如颈静脉球、乙状窦、岩下窦、岩静脉汇合处以及后、外侧和前髁静脉。在放射学分析中，在所有侧都识别出了 IPV。静脉的头端在所有侧都与颈动脉周围的静脉丛相连。静脉汇入岩下窦的尾端（49/51 侧，96.1%）或汇入前髁静脉（2/51 侧，3.9%）。
对 IPV 解剖结构的精确理解将使血管内和颅底外科医生能够进行诊断，并安全地进入涉及 IPV 的病变。
