Contrast-enhanced ultrasound for assessing pre-operative lymphatic vessel function and post-operative anastomotic patency in lymphatic-venous anastomosis: a retrospective observational study.

Rationale And Objectives: Lymphedema represents a significant global health challenge, severely impacting patient quality of life. Lymphatic-venous Anastomosis （LVA） is commonly employed as an effective intervention for patients with lymphedema. However, existing imaging tests for localizing lymphatic vessels exhibit various limitations; Consequently, there is a need for a more effective comprehensive method that can be employed for both preoperative localization of lymphatic vessels and postoperative patency assessment.