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  • Title: Left-sided Portal Hypertension After Pancreaticoduodenectomy With Resection of the Portal Vein/Superior Mesenteric Vein Confluence in Patients With Pancreatic Cancer: A Project Study by the Japanese Society of Hepato-Biliary-Pancreatic Surgery.
    Author: Mizuno S, Kato H, Yamaue H, Fujii T, Satoi S, Saiura A, Murakami Y, Sho M, Yamamoto M, Isaji S.
    Journal: Ann Surg; 2021 Jul 01; 274(1):e36-e44. PubMed ID: 31356273.
    Abstract:
    OBJECTIVE: The aim of this study was to evaluate how often left-sided portal hypertension (LPH) develops and how LPH affects the long-term outcomes of patients with pancreatic cancer treated with pancreaticoduodenectomy (PD) and resection of the portal vein (PV)/superior mesenteric vein (SMV) confluence. SUMMARY BACKGROUND DATA: Little is known about LPH after PD with resection of the PV/SMV confluence. METHODS: Overall, 536 patients who underwent PD with PV/SMV resection were enrolled. Among them, we mainly compared the SVp group [n=285; the splenic vein (SV) was preserved] and the SVr group (n = 227; the SV was divided and not reconstructed). RESULTS: The incidence of variceal formation in the SVr group increased until 3 years after PD compared with that in the SVp group (38.7% vs 8.3%, P < 0.001). Variceal bleeding occurred in the SVr group (n = 9: 4.0%) but not in the SVp group (P < 0.001). In the multivariate analysis, the risk factors for variceal formation were liver disease, N factor, conventional PD, middle colic artery resection, and SV division. The only risk factor for variceal bleeding was SV division. The platelet count ratio at 6 months after PD was significantly lower in the SVr group than in the SVp group (0.97 vs 0.82, P < 0.001), and the spleen-volume ratios at 6 and 12 months were significantly higher in the SVr group than in the SVp group (1.38 vs 1.00 and 1.54 vs 1.09; P < 0.001 and P < 0.001, respectively). CONCLUSIONS: PD with SV division causes variceal formation, bleeding, and thrombocytopenia.
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