Variant anatomy of internal jugular vein branching

The knowledge of both normal and abnormal anatomy of the veins of the neck is important for clinicians performing catheterization and surgeons operating in the region of the neck. The presence of such anomalous communications may also be important for radiologists performing angiographic and sonographic studies. This study presents three cases of variant anatomy in posterior branching and abnormal branching of internal jugular vein found during our routine neck dissection.