GATA3 and neoplasm: Consistent with these features, both our patients exhibited the characteristic immunophenotype of metastatic ILC: CK7+, CK20–, GATA3+, CDX2–, and E-cadherin–, confirming the lobular origin and metastatic nature of the tumor.7) However, although this immunoprofile is highly suggestive of breast origin, it should not be considered pathognomonic.