KRT7 and adenocarcinoma: Like Leeborg et al. suggested [2], we have found CK7 and p63 positive-cells in continuous stream from normal epithelium to neoplastic adenocarcinoma clefts, that is, the squamous-glandular transdifferentiation of the tumor (Figures 1(c), 1(d), 2(a), and 2(b)).