Impact of resection margins on long-term survival after pancreaticoduodenectomy for pancreatic head carcinoma

Table 4 Summary of studies evaluating the impact of margin status on survival

Ref.	R1/R2 patients, n (%)	Resection status	Median R1/R2 survival in mo	Median R0 survival in mo
Podda et al[19], 2017	34 (36)	R1	18	26
Sugiura et al[20], 2013	40 (19)	R1	23	30
Petermann et al[13], 2013	36 (38)	R1	14	19
Zhang et al[14], 2012	48 (57)	R1	17	29
Rau et al[21], 2012	56 (44)	R1	14	19
Fatima et al[22], 2010	149 (24)	R1/R2	15/10	19
Kato et al[4], 2009	61 (35)	R1/R2	9/6	15
Raut et al[5], 2007	60 (17)	R1	22	28
Present study	38 (31)	R1	16	23