Locally Advanced Pancreatic Head Cancer: Margin-Positive Resection or Bypass?

Table 3

Survival analysis. Survival function estimates by Kaplan-Meier method, 𝑃 value given for Logrank test, R0/R1/R2: pancreatoduodenectomy with microscopically free/microscopically positive/macroscopically positive resection margins, PVR: pancreatoduodenectomy with portal venous resection, M0: absence of distant metastasis at laparotomy, M+: presence of distant or peritoneal metastasis at laparotomy, bypass: palliative bypass procedures.

	Resection group					Bypass group
	R0	R1	R2	no PVR	PVR	M0	M+
𝑁	171	60	11	151	91	37	80
% of total	48%	17%	3%	42%	25%	10%	22%
Median survival [months]	18	18	9	17	18	10	4
3-year survival	24%	8%	0%	22%	15%	<4%	0%
𝑃 value versus bypass M0	<0.001	0.041	0.923	0.003	0.002	—	0.002