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  • Title: MRI-CEUS fusion-guided lymphatic mapping as a preoperative strategy for lymphedema patients undergoing lymphaticovenous anastomosis surgery.
    Author: Li Y, Tang J, Mao D, Dragomir MP, Li Y, Sun K, Lv Z, Liu X, Meng X, Lu K.
    Journal: J Vasc Surg Venous Lymphat Disord; 2024 Sep; 12(5):101907. PubMed ID: 38759752.
    Abstract:
    OBJECTIVE: Contrast-enhanced ultrasound (CEUS) is useful in mapping lymphatic vessels in upper limb lymphedema; this study was aimed to evaluate its efficiency in lower limb lymphedema and investigate whether magnetic resonance lymphangiography (MRL) enhance the efficiency of CEUS. METHODS: This retrospective study enrolled 48 patients with lymphedema undergoing lymphaticovenous anastomosis (LVA) surgery who received MRL and/or CEUS in addition to conventional indocyanine green (ICG) lymphangiography. The number of anastomotic sites and the duration per site (DPS) for LVA surgery were described and compared. RESULTS: Among the 48 patients subjected to analysis, it was observed that 12 (25%), 20 (41.67%), and 16 (33.33%) of them received ICG, ICG+CEUS, and ICG+CEUS+MRL, respectively. The ICG+CEUS group demonstrated a significant increase in the number of LVAs (median, 5; range, 4-7), compared with the ICG group (median, 2; range, 1-4) (P < .001). Moreover, the ICG+CEUS+MRL group exhibited a higher number of LVAs (median, 8; range, 7-8.25) compared with both the ICG+CEUS and ICG groups (P < .001). For lower limb lymphedema, the ICG+CEUS+MRL group displayed an elevated number of LVAs (median, 8; interquartile range, 7-9) (P = .003), in contrast to the ICG group (median, 3; interquartile range, 1.75-4.25). Furthermore, the DPS in the ICG+CEUS+MRL group (median, 50.56; interquartile range, 48.13-59.29) (P = .005) exhibited a remarkable decrease when compared with the ICG group (median, 131.25; interquartile range, 86.75-198.13]). CONCLUSIONS: MRL-CEUS fusion demonstrates superior performance in the identification of lymphatic vessels for lymphedema.
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