Ultrasonography- and/or mammography-guided breast conserving surgery for ductal carcinoma in situ of the breast: experience with 87 lesions.

Abstract

It is very important to excise ductal carcinoma in situ (DCIS) with sufficient margins to prevent local recurrence. We describe the experience of ultrasonography (US)-guided and/or mammography (MMG)-guided breast conserving surgery (BCS) for DCIS.
In this retrospective study, we considered 87 consecutive lesions of 86 patients treated with US- and/or MMG-guided BCS between January and December 2006.
The mean age of the 86 patients was 50.0 years (range 28-80 years). Preoperative mapping was performed using US alone for 49 lesions without microcalcifications and using US and MMG for 38 lesions with microcalcifications. Eighty-one (93.1%) of the 87 lesions were diagnosed as non-comedo type or mixed type, and 6 lesions (6.9%) were diagnosed as comedo type of DCIS. Sixty-five lesions (74.8%) were diagnosed as negative margins, 15 lesions (17.2%) as close margins, and 7 lesions (8.0%) as positive margins. Three lesions (3.4%) without microcalcifications that were mapped using US alone underwent additional resection in a second operation. The maximum tumor size was correlated with margin status (p = 0.043).
Thus US- and/or MMG-guided BCS is a reliable method for treating patients with DCIS regardless of histopathological type and offers the advantage of being noninvasive and nonstressful for patients.