Choudhry R, Tuli A, Choudhry S
Department of Anatomy, Lady Hardinge Medical College, New Delhi, India.
Surg Radiol Anat. 1997;19(2):73-7.
The external jugular v. (EJV) is increasingly being used for therapeutic procedures and monitoring by clinicians. In view of this clinical relevance, dissection was done on the head and neck regions in 40 adult cadavers of Indian origin to detect variations of the EJV. Though several patterns of tributaries were found, a facial v. (FV) of considerable size was observed coursing obliquely to join the EJV in the neck in four cases (5%). The distance of the junction of the FV and the EJV from the angle of the mandible ranged between 55 and 104 mm. This may represent a persistent communication of the primitive linguofacial v. with the secondarily developing EJV. This anastomotic channel is present for some time in the fetus but later undergoes retrogression. Its persistence in some individuals results in this variation.
颈外静脉越来越多地被临床医生用于治疗程序和监测。鉴于其临床相关性，对40具印度成年尸体的头颈部进行解剖，以检测颈外静脉的变异情况。尽管发现了几种支流模式，但在4例（5%）中观察到一条相当粗大的面静脉斜行至颈部汇入颈外静脉。面静脉与颈外静脉汇合处距下颌角的距离在55至104毫米之间。这可能代表原始舌面静脉与继发发育的颈外静脉之间的持续连通。这种吻合通道在胎儿期存在一段时间，但随后会退化。在某些个体中其持续存在导致了这种变异。
