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Management of radial scars/complex sclerosing lesions of the breast diagnosed on vacuum-assisted large-core biopsy: is surgery always necessary?
Histopathology 2019 December
AIMS: The diagnosis of radial scars/complex sclerosing lesions (RSs/CSLs) onpercutaneous biopsy carries a risk of histological underestimation. Consequently, surgical excision is often performed in order to exclude a possible associated malignancy. The aim of this study was to assess the rate of 'upgrade to carcinoma' upon subsequent surgical excision of RS/CSL cases diagnosed on vacuum-assisted large-core biopsy (VALCB). We also analysed the risk factors for upgrade in order to determine a subset of patients who could avoid surgery and benefit from conservative management with clinical and imaging follow-up.
METHODS AND RESULTS: This was a retrospective observational single-centre study on 174 consecutive RS/CSL cases diagnosed on VALCB from May 2008 to October 2015. Univariate analysis was performed to identify clinical, radiological and histological risk factors for upgrade. Surgical excision was performed following VALCB diagnosis of 88 RS/CSL cases with or without associated atypia. The overall rate of surgical upgrade to carcinoma was 9.1% (8/88). None of the benign biopsies without atypia was surgically upgraded. Additional to atypia, risk factors for upgrade were non-incidental finding of the RS/CSL, the mammographic appearance, and the number of fragments obtained during the biopsy procedure (P < 0.05).
CONCLUSION: We demonstrate that VALCB revealing an RS/CSL is reliable for excluding malignancy when there is no associated atypia and when radiological and histological findings are concordant. In such cases, surgery can be avoided in favour of clinical and imaging follow-up. When an RS/CSL is associated with atypia, the decision to perform surgical excision depends on other associated risk factors.
METHODS AND RESULTS: This was a retrospective observational single-centre study on 174 consecutive RS/CSL cases diagnosed on VALCB from May 2008 to October 2015. Univariate analysis was performed to identify clinical, radiological and histological risk factors for upgrade. Surgical excision was performed following VALCB diagnosis of 88 RS/CSL cases with or without associated atypia. The overall rate of surgical upgrade to carcinoma was 9.1% (8/88). None of the benign biopsies without atypia was surgically upgraded. Additional to atypia, risk factors for upgrade were non-incidental finding of the RS/CSL, the mammographic appearance, and the number of fragments obtained during the biopsy procedure (P < 0.05).
CONCLUSION: We demonstrate that VALCB revealing an RS/CSL is reliable for excluding malignancy when there is no associated atypia and when radiological and histological findings are concordant. In such cases, surgery can be avoided in favour of clinical and imaging follow-up. When an RS/CSL is associated with atypia, the decision to perform surgical excision depends on other associated risk factors.
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