|
Criteria
|
Suitable
|
Cautionary
|
Unsuitable
|
|---|
|
Age
|
≥ 60
|
50-59
|
< 50
|
|
Tumor Size
|
≤ 2 cm
|
2-3 cm
|
> 3 cm
|
|
T Stage
|
T1
|
Tis and T2
|
T3-T4
|
|
Nodal biopsy
|
Yes
|
-
|
No
|
|
Margins
|
Negative (≥ 2 mm)
|
Close (< 2 mm)
|
Positive
|
|
Histology
|
Invasive ductal or other favorable subtypes
|
Invasive Lobular
|
-
|
|
Pure DCIS
|
No
|
≤ 3 cm
|
> 3 cm
|
|
ER Receptor
|
Positive
|
Negative
|
-
|
|
LVSI*
|
No
|
Limited/Focal
|
Extensive
|
|
EIC*
|
No
|
≤ 3 cm
|
> 3 cm
|
- * Presence of LVSI and EIC were considered cautionary in this study. Multicentricity, multifocality, neoadjuvant chemo/endocrine therapy, and known BRCA1/2 mutations were not present in any patients in this study. Pathologic nodal stage was pN0 for all patients who underwent axillary assessment
