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- W2317185886 abstract "Background: The incidence of atypical ductal hyperplasia (ADH) is increasing due to mass screening. Because of the underestimation risk of malignancy, the management remains controversial. Our goal was to analyze clinicopathologic features of patients with ADH diagnosed on directional vacuum-assisted biopsy (DVAB). The objectives of this continuous retrospective study were to evaluate the underestimation rate of malignancy and to identify predictors of upgrade to carcinoma. Methods: Between 2003 and 2010, 3159 patients underwent stereotactic DVAB in our institute. We retrospectively evaluate clinical, mammographic and pathological features of 298 cases of ADH who underwent surgical excision in our center (93.1%). Patients with concurrent history of breast cancer, intraductal carcinoma (DCIS) associated, or with no follow-up or surgical excision on place were excluded. Histological scar of macrobiopsy was systematically searched in surgical specimens. A pathologic upgrade was defined by presence of invasive cancer or DCIS on surgical specimen. Statistical tests used were the chi-square or Fisher9s exact test. Results: Among the 298 studied DVAB, 224 ADH were isolated (75.2%), 46 associated to flat epithelial atypia (15.4%) and 28 to lobular neoplasia (9.4%). 98.4% patients presented microcalcifications at diagnosis. In 52 cases, lesions were upgraded to DCIS (n = 38) or invasive cancer (n = 14). The underestimated rate was 17.5%. In 67.3% cases, upgrade lesions were low or intermediate grade DCIS. Only the history of contralateral breast cancer was significantly correlated with the underestimated rate (p = 0.04). There was no statistical difference between these 52 cases and the 246 others for: family history, size of calcification, sampling number, histological lesion, and quality of calcifications removal. Conclusions: In this study, DVAB may not be considered a therapeutic procedure in case of ADH, even in the case of complete removal of microcalcifications. It is still challenging to identify a subgroup of ADH cases with a low upgrade rate. Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P4-14-10." @default.
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- W2317185886 date "2012-12-15" @default.
- W2317185886 modified "2023-09-26" @default.
- W2317185886 title "Abstract P4-14-10: Atypical Ductal Hyperplasia diagnosed on directional vacuum-assisted biopsy: is surgical excision mandatory?" @default.
- W2317185886 doi "https://doi.org/10.1158/0008-5472.sabcs12-p4-14-10" @default.
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