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  • Title: Long-term outcome of portomesenteric vein invasion and prognostic factors in pancreas head adenocarcinoma.
    Author: Jeong J, Choi DW, Choi SH, Heo JS, Jang KT.
    Journal: ANZ J Surg; 2015 Apr; 85(4):264-9. PubMed ID: 24641800.
    Abstract:
    BACKGROUND: The purpose of this study was to clarify the post-operative prognosis of pancreatic head cancer with pathologic portal vein (PV) or superior mesenteric vein (SMV) invasion. METHODS: From May 1995 to December 2009, preoperative, intra-operative and post-operative data from 276 patients who underwent pancreaticoduodenectomy for pancreatic ductal adenocarcinoma were reviewed retrospectively. The long-term prognosis was compared between patients with a pathologic PV-SMV invasion and those without invasion. RESULTS: Fourty-six patients (16.7%) underwent PV-SMV resection during pancreaticoduodenectomy. Pathologic PV-SMV invasion was observed in 30 (65.2%). Post-operative severe morbidity (grade 3 or 4) was similar for patients with and without PV-SMV resection (8.7% with versus 7.0% without P = 0.754). The mortality rate was 2.2% with PV-SMV resection and 0.9% without PV-SMV resection (P = 0.423). Survival of PV-SMV resection and no resection group had no significant difference (median survival, 16 versus 12 months; P = 0.086). No significant difference in overall survival was seen between patients with and without pathologic PV-SMV invasion (median survival, 13 versus 16 months; P = 0.663). Tumour differentiation, R status, tumour size and type of operation were revealed as independent prognostic factors. CONCLUSIONS: 34.8% of patients who underwent PV-SMV resection had no pathologic invasion. And PV-SMV resection did not increase the rate of severe complications and mortality. Furthermore, the prognosis for patients with pathologic PV-SMV invasion may be nearly the same as patients with no invasion. So, PV-SMV resection with reconstruction should be considered in pancreatic head cancer patients with suspected PV-SMV invasion.
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