What is the diagnostic test performed to detect damage or malformations of the lymphatic vessels?

The diagnostic test commonly used to detect damage or malformations of the lymphatic vessels is lymphangiography. This procedure involves injecting a contrast dye into the lymphatic system, allowing for imaging of the vessels using X-rays or other imaging techniques. It helps visualize abnormalities, blockages, or leaks in the lymphatic system, aiding in diagnosis and treatment planning.