Injury caused by biopsy taken for scalene lymph node -

Posterior lymph nodes are located along the back of the neck. They are known as the lateral jugular, anterior jugular, and jugulo-digastric lymph nodes. The inferior deep cervical lymph nodes, the juguloomohyoid nodes, and the supraclavicular, or scalene, nodes are considered deep jugular nodes some times during the biopsy of scalene lymph nodes causes injury to vagus nerve Ref Davidson 23rd edtion pg 1061