Table 1.

Checklist of key steps for the sentinel lymph node biopsy procedure in breast cancer.

□	Consider SLNB for all invasive breast cancer and cases of DCIS undergoing mastectomy
□	Utilize dual tracer (blue dye and radiocolloid) to optimize identification and reduce false negative rates, especially following neoadjuvant therapy, prior breast/axillary surgery or in patients with elevated BMI
□	Consider IV prophylaxis if blue dye utilized
□	Inject blue dye around tumor periphery, at the palpable edge of the biopsy cavity, or into the subareolar plexus
□	Inject radiocolloid peritumorally, intradermally, or into the subareolar plexus
□	Avoid injection into the tumor itself or into a seroma cavity
□	Consider lower dose or subareolar injection for tumors located in the axillary tail
□	Massage breast can be performed
□	Remove any suspicious palpable nodes

Abbreviations: SLNB=sentinel lymph node biopsy; DCIS=ductal carcinoma in situ; BMI=body mass index; IV=intravenous