PDF(Pubmed)
Abstract：
Usually, the external jugular vein (EJV) is located superficially over the sternocleidomastoid muscle and joins the subclavian vein or the venous angle. The internal jugular vein (IJV) lies deeply in close relation with the common carotid artery and vagus nerve, enveloped by the carotid sheath. Normally, there is no direct connection between those vessels. During a routine neck dissection, we found a rare anastomosis between IJV and EJV. The anastomosis was localized on the level of the cricoid cartilage. It was approximately 1 cm long, with the diameter of the lumen being 0.3 cm. There was no obstruction along the length of the vessel. The direction was oblique and followed the blood flow from IJV to EJV. The observed variation has high clinical importance related to numerous procedures executed in the neck region, such as placement of hemodialysis catheter in patients with renal failure, insertion of central venous line in the care of critically ill patients, and radical neck dissections.
摘要：
通常,颈外静脉（EJV）位于胸锁乳突肌的表面上，并连接锁骨下静脉或静脉角。颈内静脉（IJV）与颈总动脉和迷走神经密切相关，被颈动脉鞘包围.通常,这些船只之间没有直接联系。在例行的颈部解剖中，我们发现IJV和EJV之间罕见的吻合。吻合位于环状软骨的水平上。它大约有1厘米长,腔的直径为0.3厘米。沿着血管的长度没有阻塞。方向倾斜，并跟随从IJV到EJV的血流。观察到的变异具有与在颈部区域执行的许多程序相关的高临床重要性。如肾衰竭患者血液透析导管的放置，在危重病人的护理中插入中心静脉管线，和根治性颈淋巴结清扫术。
