What is the diagnostic technique procedure concept of a lymphangiography?

Lymphangiography is a diagnostic imaging technique used to visualize the lymphatic system. The procedure involves the injection of a contrast agent into the lymphatic vessels, often in the extremities, followed by X-ray imaging to track the flow of the contrast through the lymphatic network. This technique helps identify abnormalities such as blockages, tumors, or infections in the lymphatic system. It is particularly useful in diagnosing conditions like lymphedema or lymphatic malformations.