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Thoracic Duct (Left Lymphatic Duct)

Medically reviewed by: Stephanie Curreli, MD, PhD
Last Updated: Jun 19, 2015

The thoracic duct, or the left lymphatic duct, is the largest of the body’s lymphatic ducts. It collects almost all of the lymph that circulates throughout the body (the remainder is collected by the right thoracic duct); from there, the lymph flows back into the bloodstream. The thoracic duct is a structure roughly sixteen inches long located in the mediastinum of the pleural cavity which drains lymph Continue Scrolling To Read More Below...

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Continued From Above... fluid from everywhere except the upper right quarter of the body above the diaphragm and down the midline (this is collected by the right lymphatic duct).