Right lumbar lymphatic trunk

The right lumbar lymphatic trunk drains the ymph from the lower extremities, pelvic organs, and parts of the abdominal wall. The right lumbar lymphatic trunk originates from the confluence of several lumbar lymphatic vessels that collect lymph from the lumbar lymph nodes and ascends along the right side of the abdominal aorta.

It joins with the left lumbar trunk and the intestinal trunk to form the cisterna chyli, which is the dilated sac that serves as a reservoir for lymph before it enters the thoracic duct.

According to Ji et al., the right lumbar trunk has an average length of approximately 111 mm and an external diameter at its origin of about 1.9 mm, increasing to 2.2 mm at its termination.[1]

The confluence patterns of the lumbar trunks and the intestinal trunk can vary, with the right lumbar trunk sometimes joining the common trunk formed by the left lumbar and intestinal trunks, or vice versa.[1]