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- W3199200315 abstract "Ductal carcinoma in situ with microinvasion (DCISM) represents ~1% of all breast cancer cases and is arguably a more aggressive subtype of ductal carcinoma in situ (DCIS). Lacking studies with a large population, the survival outcomes of DCISM are still poorly understood and the treatment recommendations remain controversial. This study aims to investigate the long-term outcome of patients with DCISM, potential risk factors for their prognosis, and the difference of survival between patients treated with breast-conserving surgery plus radiotherapy (BCT + RT) and mastectomy only.In total, 1299 patients from 2008 to 2019 with DCISM were retrospectively retrieved. Clinicopathological features were analyzed. Subgroup analysis was conducted between patients who underwent BCT + RT and mastectomy only. Univariate and multivariate analyses were performed to identify prognostic factors for survival. Differences of survival between two groups were compared using the log-rank test.Totally, 1286 patients had follow-up information, the median follow-up is 54.57 months, the 5-year local-regional-free survival (LRFS), distant metastasis-free survival (DMFS), and overall survival (OS) were 98.6%, 97.1%, and 99.4%, respectively, two deaths were due to breast cancer. Multivariate analysis identified age <40 (p = 0.028) and close margin (≤2 mm) as independent negative prognostic factors for LRFS. No prognostic factors were identified for DMFS and OS. The 5-year LRFS, DMFS, and OS of patients who had DCIS component ≥5 cm and underwent mastectomy without adjuvant radiotherapy were 100%, 98.4%, and 98.4%, respectively. After propensity score matching (PSM), no survival difference was observed between patients treated with BCT + RT or mastectomy only.DCISM patients had a good survival, even those with DCIS component ≥5 cm. Patients aged <40 or with close margin (≤2 mm) had a poorer LRFS, but not DMFS or OS. BCT + RT is a feasible choice for DCISM patients." @default.
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- W3199200315 date "2021-09-21" @default.
- W3199200315 modified "2023-10-14" @default.
- W3199200315 title "Characteristics, prognosis, risk factors, and management of recently diagnosed ductal carcinoma in situ with microinvasion" @default.
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- W3199200315 doi "https://doi.org/10.1002/cam4.4263" @default.
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