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  • Title: High risk breast lesions identified on MRI-guided vacuum-assisted needle biopsy: outcome of surgical excision and imaging follow-up.
    Author: Speer ME, Huang ML, Dogan BE, Adrada BE, Candelaria RP, Hess KR, Hansakul P, Yang WT, Rauch GM.
    Journal: Br J Radiol; 2018 Oct; 91(1090):20180300. PubMed ID: 29947265.
    Abstract:
    OBJECTIVE:: To determine whether breast MRI-guided vacuum-assisted biopsy (MRI-VAB) high-risk lesion histology influences surgical or long-term imaging follow-up outcomes. METHODS:: Patients with imaging-concordant high-risk findings on 9-gauge breast MRI-VAB between January 2007 and July 2012 who had surgical histopathology or 2 year imaging follow-up were retrospectively reviewed. RESULTS:: 90 patients with 99 lesions were included. Lesions were atypical ductal hyperplasia (ADH) (n = 21), lobular neoplasia [n = 36; atypical lobular hyperplasia (ALH) (n = 22), lobular carcinoma in situ (LCIS) (n = 6), and ALH plus LCIS (n = 8)], and other high-risk lesion (n = 42; papillary lesions, radial scar, flat epithelial atypia, atypia unspecified). Of 53 excised lesions, 6 (11%) were upgraded to invasive cancer or ductal carcinoma in situ (DCIS). 4 of 21 (19%) ADH lesions were upgraded to DCIS. 2 of 36 (6%) lobular neoplasia lesions, both combined ALH and LCIS, were upgraded to DCIS, and invasive lobular carcinoma, respectively. The remaining 46 lesions were managed conservatively with imaging follow-up: 17 (37%) had mammography only, while 29 (63%) had mammography and MRI follow-up. There was no evidence of breast cancer development at the site of MRI-VAB in the cases with only imaging follow-up. CONCLUSION:: We conclude that the upgrade rate for high-risk lesions at MRI-VAB at surgical excision is low. Surgical excision is warranted for ADH and combined ALH-LCIS lesions. For other lesions, a multidisciplinary approach to decide on personalized management may be appropriate. ADVANCES IN KNOWLEDGE:: Surgical excision is warranted for ADH lesions and combined ALH-LCIS lesions identified at breast MRI-VAB. A multidisciplinary approach to patient management of other high-risk lesions may be appropriate.
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