Anatomy of central lymphatic circulation view

Anatomic variants of the thoracic duct. In up to 40 percent of patients, two thoracic ducts (see above) and rarely three thoracic ducts) exist through the entirety of the mediastinum (see above).  Extensive lymphatic tributaries to the thoracic duct and anastomoses course through the posterior mediastinum adjacent to the heart and major thoracic blood vessels