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Breast Imaging |
1 From the Departments of Diagnostic Radiology (W.A.B., H.E.M.) and Pathology (O.B.I.) and the Greenebaum Cancer Center (W.A.B.), University of Maryland School of Medicine, Baltimore; and the Department of Radiology, Mercy Medical Center, Baltimore, Md (H.E.M.). Received April 25, 2000; revision requested June 16; revision received July 10; accepted July 25. Address correspondence to W.A.B., University Imaging Center, 419 W Redwood St, Suite 110, Baltimore, MD 21205-1595 (e-mail: waberg@umaryland.edu).
PURPOSE: To review outcomes of lesions diagnosed at core-needle breast biopsy as atypical lobular hyperplasia (ALH) or lobular carcinoma in situ (LCIS).
MATERIALS AND METHODS: Results from 1,400 consecutive core-needle breast biopsies were reviewed. Twenty-five (1.8%) biopsy samples with the diagnosis of lobular neoplasia (15 with ALH and 10 with LCIS) adjacent to or in a targeted benign lesion were found. Lesions were excised (n = 15) or followed up (n = 10) at least 22 months.
RESULTS: Of the 15 lesions with ALH, 13 (87%) were adjacent to (n = 12) or associated with (n = 1) microcalcifications, and two (13%) were in masses. Six lesions with residual calcifications were excised. One lesion was diagnosed as ductal carcinoma in situ (DCIS), and five were benign (residual ALH was seen in four). One excised mass showed residual ALH. Six lesions were gone at follow-up, one cluster of microcalcifications was decreased in size, and one fibroadenoma with ALH was stable. Of the 10 lesions with LCIS, seven (70%) were adjacent to (n = 6) or associated with (n = 1) microcalcifications, and three (30%) were in or adjacent to masses. Five lesions with LCIS and residual microcalcifications were excised. Three yielded atypical ductal hyperplasia (ADH); one, residual LCIS; and one, ALH. Three masses with LCIS were excised. One showed residual LCIS; one, a papilloma with adjacent LCIS; and one, a fibroadenoma with LCIS in it. One cluster of microcalcifications was gone at follow-up, and one was stable.
CONCLUSION: After a diagnosis of lobular neoplasia at core biopsy, residual microcalcifications are viewed in the context of a patient at higher risk of cancer. Of 11 lesions with residual microcalcifications, three (27%) were ADH and one (9%) was DCIS.
Index terms: Breast, biopsy, 00.1261, 00.1267, 00.30 • Breast, diseases, 00.71, 00.72 • Breast neoplasms, diagnosis, 00.1261, 00.1267, 00.30
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