ERBB2 and ductal breast carcinoma in situ: In survival analyses, none of the clinicopathologic features (extent of DCIS, nuclear grade, comedo-type necrosis, HR status, HER2 status, Ki-67 index, p53 overexpression, and margin status) and therapies (type of surgery, adjuvant radiation therapy, and adjuvant endocrine therapy) was associated with ipsilateral breast recurrence.