Morphologically, it is characterized by monotonous, alveolar-like globular clusters of low-grade carcinoma cells with peripheral palisading, rather than the usual single filing or isolated cells commonly associated with ILC, classic type. Due to this unique morphology, it can be misdiagnosed as LCIS, DCIS, or low-grade IDC, NST due to overlapping morphology and E-cadherin expression. This evidence concerns the gene CDH1 and lobular breast carcinoma in situ.