Do sentinel node micrometastases predict recurrence risk in ductal carcinoma in situ and ductal carcinoma in situ with microinvasion?

Background: Because the implications of micrometastases found on sentinel node biopsy (SNB) for ductal carcinoma in situ (DCIS) or ductal carcinoma in situ with microinvasion (DCISM) are largely unknown, we wished to determine if SNB pathology predicted recurrence risk in DCIS/DCISM.

Methods: Retrospective chart review identified patients with DCIS/DCISM who underwent SNB. SNB findings and all local and distant recurrences were determined.