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  • Title: Evolution of the technique of renoportal anastomosis for patients with complete portal venous occlusion in living donor liver transplantation: a retrospective cohort study.
    Author: Yoon YI, Moon DB, Lee SG, Ahn CS, Hwang S, Kim KH, Ha TY, Song GW, Jung DH, Park GC, Kim MJ.
    Journal: Int J Surg; 2023 Jul 01; 109(7):1953-1960. PubMed ID: 37204447.
    Abstract:
    BACKGROUND: This study aimed to present our surgical technique and the long-term outcomes of living donor liver transplantations with renoportal anastomosis for patients with complete portal venous occlusion. Renoportal anastomosis (RPA) is a promising technique for portal flow reconstruction during liver transplantation in patients with complete occlusion of the portal vein and extensive splanchnic vein thrombosis. However, reports demonstrating living donor liver transplantations (LDLT) with renoportal anastomosis are rarer than those demonstrating deceased donor liver transplantation. MATERIALS AND METHODS: In this single-centre retrospective cohort study, the authors analyzed the medical records of patients who underwent portal flow reconstruction via RPA with end-to-end anastomosis between the interposition graft and LRV-connected inferior vena cava (VC) cuff. The outcomes included postoperative RPA-related morbidity and patient and allograft survival for patients who underwent LDLT with RPA. RESULTS: Fifteen patients underwent LDLT with portal flow reconstruction via RPA from January 2005 to December 2019. The median follow-up period was 80.7 months (range: 27 days-195.2 months). RPA evolved from end-to-end anastomosis in 1 (6.7%) patient to end-to-side anastomoses in the next 6 (40%) patients and finally, to end-to-end anastomoses between the inferior VC cuff connected to the left renal vein and interposing vascular grafts in 8 (53.3%) patients. After standardization of the RPA technique from the eighth case in 2011, the incidence rate of RPA-related complications significantly decreased from 42.9% (3/7) to 12.5% (1/8). At the last follow-up, all 11 surviving patients had normal liver function, and 10 patients had patent anastomoses on imaging examination. CONCLUSIONS: This standardized RPA technique using an inferior VC cuff connected to the left renal vein creates a safe end-to-end RPA.
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