Fig. 2
Breast cancer recurrence in the studies comparing SLND + ALND to SLND alone. Please note the following regarding the data included for ACOSOG ZOO11 for regional breast cancer recurrence: Regional recurrence defined as recurrence in the axillary, supraclavicular or internal mammary nodes. The authors only report local recurrence, axillary recurrence and locoregional recurrence. We have subtracted the local recurrence data from locoregional recurrence data to obtain the regional recurrence data, which is equal to the disease recurrence in the axilla data, suggesting that no patients recurred in the supraclavicular or internal mammary nodes, provided all these data only count each patient once. An entry of 0 in the total number of events column signifies that the study did not report this outcome