Radiotherapy after Conservative Surgery in Ductal Carcinoma In Situ of the Breast: A Review

Table 2

Comparison of breast cancer events in prospective randomized trials.

	NSABP-B17 (17.25 yrs. median FU)		EORTC 10853 (10.5 yrs. median FU)		SweDCIS (8.4 yrs. mean FU)		UK/ANZ DCIS (12.7 yrs. median FU)
	CS %	CS + RT%	CS%	CS + RT%	CS%	CS + RT%	CS%	CS + RT%
Ipsilateral events
Total	35.0	19.8	26.0	15.0	27.1	12.1	19.4	7.1
Invasive	19.6	10.7	13.0	8.0	12.3	7.2	9.1	3.3
In situ	15.4	9.0	14.0	7.0	14.8	4.9	9.7	3.8
Contralateral events	7.9	9.3	4.0	8.0	5.9	6.5	4.1	3.3
OS%	86*	87*	95	95	90**	92**	97.9^#	96.2^#

*At 12 yrs. followup.
**Breast cancer deaths and other deaths are reported in the study.
^#All trial participants included.
Legend: yrs.: years; FU: followup; OS: overall survival; RT: radiotherapy; CS: conservative surgery.