Therefore, we analysed stromal and DCIS intraepithelial lymphocyte, CD3+ T-cell, CD20+ B-cell, CD3+CD8− T-cell, CD3+FOXP3+ T-cell, CD3+CD8+ T-cell, CD8+Ki67+ T-cell, and CD68+ cell density in relation to outcome among all women with DCIS in whom periductal fibrosis was absent (n = 98). This evidence concerns the gene MKI67 and ductal breast carcinoma in situ.