Abstract：
The occipital artery (OA) typically originates from the external carotid artery (ECA). Variations of the ECA has been well described in the current literature, while the OA is a relatively stable vessel, and its variations are uncommon. In the current case report, an aberrant OA has been found coexisting with a linguofacial trunk (LFT) on the right hemineck of a 51-year-old male patient. The OA was identified originating from the cervical internal carotid artery (ICA) at the level of the second cervical vertebra (C2). On the ECA, the lingual and facial arteries were emanating in common, as LFT. The left hemineck of the patient was free of variations. The current coexistence of arterial variants has been reported only once previously; therefore, the current case corresponds to the second case in the English literature. The aberrant OA origin from the ICA has been estimated with a pooled prevalence of 0.37%, while the origin at the C2 level and from the anterior surface of the ICA corresponds to a very rare variation. Additionally, the LFT is one of the most common trunk that can be found on the ECA. Interventional radiologists and surgeons must be aware of common and uncommon variation to avoid iatrogenic lesion.
摘要：
枕动脉(OA)通常源自颈外动脉(ECA)。ECA的变化已经在当前文献中得到了很好的描述，虽然OA是一个相对稳定的容器，它的变化并不常见。在目前的病例报告中,在一名51岁男性患者的右半颈发现了一种异常OA与舌面干(LFT)并存.OA是在第二颈椎（C2）的水平上从颈颈内动脉（ICA）确定的。在ECA，舌动脉和面部动脉共同发出，作为LFT。患者的左半颈无变化。目前动脉变异的共存以前只报道过一次；因此，当前情况对应于英语文献中的第二种情况。据估计，来自ICA的异常OA来源的合并患病率为0.37％，而C2水平和ICA前表面的起源对应于非常罕见的变化。此外,LFT是ECA上最常见的树干之一。介入放射科医生和外科医生必须意识到常见和不常见的变异，以避免医源性病变。
