Table 3.
Note.—Pathology type and grade: IDC = invasive ductal carcinoma, ILC = invasive lobular carcinoma. Grade 1, well-differentiated invasive cancer; grade 2, moderately differentiated invasive cancer; grade 3, poorly differentiated invasive cancer. Pathology margin status: negative, inked margin is more than 0.3 cm from carcinoma; close, inked margin is 0.1–0.3 cm from carcinoma; very close, inked margin is less than 0.1 cm from carcinoma. Positive, ink on carcinoma. ER = estrogen receptor, HER2 = human epidermal growth factor receptor 2, PR = progesterone receptor.
*One patient had a second operation at a different session, with pathologic analysis of the re-excision sample revealing residual ductal carcinoma in situ at the superior margin.