Table 3.

American Brachytherapy Society and American Society of Breast Surgeons selection criteria and the Eligibility Criteria for NSABP B-39/RTOG 0413 Trial [31]

	ABS	ASBS	NSABP B-39 RTOG 0413
Age	≥ 50	≥ 45	≥ 18
Histology	unifocal, invasive ductal cancer	invasive ductal cancer or DCIS	invasive adenocarcinoma or DCIS
Tumor size	≤ 3 cm	≤ 3 cm	≤ 3 cm
Surgical margins	negative microscopic margins	negative microscopic margins	negative microscopic margins
Number of involved lymph nodes	0	0	0–3