The high specificity of PET imaging indicates that patients who have a PET-positive axilla should have an ALND rather than an SNB for axillary staging. In contrast, FDG-PET showed poor sensitivity in the detection of axillary metastases, confirming the need for SNB in cases where PET is negative in the axilla.
SLNB accuracy after a previous breast biopsy is comparable with the results obtained in validation studies. SLNB after a previous breast biopsy can be considered a standard procedure. Lymphoscintigraphy identifies the sentinel node in 99% of patients.
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