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Recommendations for anticoagulation following major venous reconstruction for pancreatic adenocarcinoma (PA) are not clearly established. The aim of our study was to find out the relation between postoperative anticoagulant treatment and thrombosis rate after portal venous resection.  Materials and methods . Between 1986 and 2006, twenty seven portal vein resections were performed associated with pancreaticoduodenectomies ( n  = 27) (PD).We defined four types of venous resection: type I was performed 1 cm above the confluent of the superior mesenteric vein (SMV) ( n  = 12); type II lateral resection and venorrhaphy at the level of the confluent SMV ( n  = 12); type III ( n  = 1) resulted from a primary end-to-end anastomosis above confluent and PTFE graph was used for reconstruction for type IV ( n  = 2). Curative anticoagulant treatment was always indicated after type IV ( n  = 2) resection, and after resection of type II when the length of venous resection was longer than ≥2 cm.  Results . Venous thrombosis rate reached: 0%, 41%, and 100% for type I, II, IV resections, respectively. Among them four patients received curative anticoagulant treatment.  Conclusion.  After a portal vein resection was achieved in the course of a PD, curative postoperative anticoagulation does not prevent efficiently the onset of thrombosis.

Therapeutic Anticoagulant Does not Modify Thromboses Rate Vein after Venous Reconstruction Following Pancreaticoduodenectomy