Ductal Carcinoma In Situ With Microinvasion: Prognostic Implications, Long-Term Outcomes, and Role of Axillary Evaluation

Our data imply that the natural history of DCISM closely resembles that of DCIS, with a low incidence of local-regional and distant failures. On the basis of our large dataset, the incidence of axillary metastasis in DCISM appears to be small and not appear to correlate to outcomes, and thus, microinvasion alone should not be the sole criterion for more aggressive treatment.