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. Author manuscript; available in PMC: 2011 Aug 3.
Published in final edited form as: N Engl J Med. 2011 Jan 19;364(5):412–421. doi: 10.1056/NEJMoa1008108

Figure 1. Randomization and Results of Evaluation for Occult Metastases.

Figure 1

The patients who underwent sentinel-lymph-node (SLN) biopsy plus axillary dissection and the patients who underwent SLN biopsy alone were combined into two analytic cohorts: patients in whom occult metastases were detected and patients in whom occult metastases were not detected. The categories for metastasis size (isolated tumor-cell clusters, micrometastases, and macrometastases) were used for subgroup analysis.