Abstract
Although adjuvant chemotherapy (AC) using gemcitabine improves the prognosis of patients with resectable pancreatic cancer, the effect of gemcitabine AC on the prognosis of patients with borderline resectable pancreatic cancer is not clear. We analyzed the prognosis of patients with pancreatic cancer who underwent curative pancreatoduodenectomy or total pancreatectomy in combination with portal/superior mesenteric vein resection (PVR) [PVR (+) group] or without PVR [PVR(-) group]. MST of the PVR (+) group was significantly shorter than that of the PVR(-) group (p=0.017). In contrast, when we focused on the patients with gemcitabine AC, there was no significant difference in MST between the PVR (+) and the PVR (-) groups (p=0.247). Furthermore, we compared MST of two subgroups in the PVR (+) group depending on gemcitabine AC status. In the PVR (+) group, MST of the patients with gemcitabine AC was significantly longer than that without gemcitabine AC (p=0.003). This was also true for the patients with pancreatic cancer which had histologically proven invasion to portal/superior mesenteric vein (PV/SMV) (p=0.001). The prognosis of patients with pancreatic cancer invading PV/SMV can be improved by combination therapy with PVR and gemcitabine adjuvant chemotherapy.
Published Version
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