Is Surgical Excision Necessary for the Management of Atypical Lobular Hyperplasia and Lobular Carcinoma In Situ Diagnosed on Core Needle Biopsy?: A Report of 38 Cases and Review of the Literature

Cangiarella, Joan; Guth, Amber; Axelrod, Deborah; Darvishian, Farbod; Singh, Baljit; Simsir, Aylin; Roses, Daniel; Mercado, Cecilia
June 2008
Archives of Pathology & Laboratory Medicine;Jun2008, Vol. 132 Issue 6, p979
Academic Journal
Context.-Both atypical lobular hyperplasia (ALH) and lobular carcinoma in situ (LCIS) have traditionally been considered to be risk factors for the development of invasive carcinoma and are followed by close observation. Recent studies have suggested that these lesions may represent true precursors with progression to invasive carcinoma. Due to the debate over the significance of these lesions and the small number of cases reported in the literature, the treatment for lobular neoplasia diagnosed by percutaneous core biopsy (PCB) remains controversial. Objective.-To review our experience with pure LCIS or ALH diagnosed by PCB and correlate the radiologic findings and surgical excision diagnoses to develop management guidelines for lobular neoplasia diagnosed by PCB. Design.-We searched the pathology database for patients who underwent PCB with a diagnosis of either pure LCIS or ALH and had subsequent surgical excision. We compared the core diagnoses with the surgical excision diagnoses and the radiologic findings. Results.-Thirty-eight PCBs with a diagnosis of ALH (18 cases) or LCIS (20 cases) were identified. Carcinoma was present at excision in 1 (6%) of the ALH cases and in 2 (10%) of the LCIS cases. In summary, 8% (3/38) of PCBs diagnosed as lobular neoplasia (ALH or LCIS) were upgraded to carcinoma (invasive carcinoma or ductal carcinoma in situ) at excision. Conclusions.-Surgical excision is indicated for all PCBs diagnosed as ALH or LCIS, as a significant percentage will show carcinoma at excision.


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