Thoracic duct surgery is a procedure used to treat conditions involving the thoracic duct, the main lymphatic vessel in the body. These conditions can include chylothorax, a buildup of lymphatic fluid in the pleural cavity, or lymphatic leakage caused by trauma, surgery, or congenital defects. The surgery may involve ligating or bypassing the thoracic duct to prevent fluid leakage and restore normal lymphatic drainage.

Thoracic duct surgery helps to manage lymphatic fluid accumulation, prevent infection, and improve the patient's overall quality of life by restoring normal fluid balance.