KRT7 and colon adenocarcinoma: Diffused CK7 and β-catenin can help differentiate the enteric subtype of UrAC from colonic adenocarcinoma, with the former being nuclear β-catenin(-) and CK7 (+/-), while the latter being diffuse nuclear β-catenin(+) and CK7(-) (3, 27, 29).