What is cisterna chyli?

The cisterna chyli is a dilated sac-like structure located at the base of the thoracic duct in the abdomen. It serves as a storage area for lymph, which is a clear fluid that circulates throughout the lymphatic system. The lymphatic system plays a crucial role in maintaining fluid balance within the body, as well as in immune function.

The cisterna chyli receives lymphatic drainage from the lower half of the body, including the lower limbs, pelvis, and abdomen. From the cisterna chyli, lymphatic fluid continues its journey upward through the thoracic duct, eventually returning to the bloodstream near the left subclavian vein.

Overall, the cisterna chyli is an important component of the lymphatic system, helping to collect and transport lymphatic fluid throughout the body.