Intraoperative Electron Radiation Therapy (IOERT) in the management of locally recurrent rectal cancer

BMC Cancer

Table 3 Prognostic value of resection margin for LC and OS with or without EBRT (univariate analysis)

	EBRT + IOERT	IOERT alone	EBRT + IOERT	IOERT alone
	3-y-LC	3-y-LC	3-y-OS	3-y-OS
R0	83%	79%	72%	100%
R1	52%	29%	43%	31%
R2	13%	21%	53%	17%
p-value	<0,001	0,028	0,011	<0,001

LC: local control, OS: overall survival, EBRT: external beam radiation therapy, IOERT: intraoperative electron radiation therapy, 3-y-LC: three-year local control, 3-y-OS: three-year overall survival, R0: complete resection without microscopic residual disease, R1: microscopic residual disease, R2: gross residual disease, %: percentage.

ISSN: 1471-2407