Abstract
A 67-year-old female, who had noticed an. anterior neck mass 2 weeks before her first visit to a physician, was referred to our hospital. The neck mass was 3.5cm in diameter with a soft and movable nature. The tumor size was not altered by changes of position. No symptoms other than the neck mass were found. Ultrasonic examination showed that the tumor was located between the external and internal jugular veins, and demonstrated the flow of blood from the internal jugular vein to the external jugular vein during the Valsalva maneuver. These findings suggested a diagnosis of venous aneurysm. At the time of the operation, the communication between the internal and external jugular veins was confirmed. This case of venous aneurysm represents the first report of an abnormal venous communication emanating from an anomalous jugular vein. However, the possibility of venous compressin with the omohyoid muscle in developing this aneurysm cannot be ruled out.
