Rare Neck Venous Anatomy Anomalies - A Case Report.

Rationale: Knowledge of the venous systems of the neck is important in microvascular anastomosis as well as to avoid unintended bleeding during neck dissection.

Patient Concerns: We present three rare variations of the jugular system of the neck which could have complicated neck dissection.

Diagnosis: The first case is of a posterior tributary from an internal jugular vein (IJV).