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Multidisciplinary Intervention in Radiation-Associated Angiosarcoma of the Breast: Patterns of Recurrence and Response to Treatment
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Multidisciplinary Intervention in Radiation-Associated Angiosarcoma of the Breast: Patterns of Recurrence and Response to Treatment
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Journal Article
Multidisciplinary Intervention in Radiation-Associated Angiosarcoma of the Breast: Patterns of Recurrence and Response to Treatment
2022
Overview
BackgroundRadiation-associated angiosarcoma (RAAS) of the breast is an aggressive malignancy affecting 1 in 1000 breast cancer patients. This study aimed to determine differences in treatments and outcomes for RAAS initially managed through a sarcoma multi-disciplinary team (SMDT) compared with an outside center (OC) and to describe outcomes after recurrence.MethodsPatients with a diagnosis of breast RAAS between 2004 and 2019 were identified from our sarcoma database. Clinicopathologic characteristics, recurrence patterns, and factors predictive of survival were assessed. Differences in local recurrence-free survival (LRFS) and disease-specific survival (DSS) were estimated using Kaplan-Meier and compared using the log-rank test.ResultsSurgery was performed for 49 women with RAAS, who had a median age of 74 years (range 41–89 years). Primary management was performed by SMDT for 26 patients and by OC for 23 patients. Radical mastectomy and reconstruction were performed for 96% of the SMDT group versus 17% of the OC group (p = 0.00001). The proportion patients who received chemotherapy, radiation, or both was 42.3% in the SMDT group and 0% in the OC group. During a median follow-up period of 26 months, recurrence was experienced by 38% (10/26) of the SMDT cohort and 83% (19/23) of the OC cohort (p = 0.002). The 3-year LRFS was better in the SMDT cohort (59.3% vs 31.8%; p = 0.019). Of the 29 recurrences 16 received chemotherapy and 6 received radiation, surgery, or both. At the last follow-up visit, 20 patients were in first remission, 1 patient was in second remission, 8 patients were alive with disease, and 20 patients had died of disease.ConclusionInitial treatment by SMDT was associated with more extensive surgery, multimodal treatments, and a better 3-year LRFS. Patients with breast RAAS likely benefit from early referral and treatment by an SMDT.
