CK20 and CK5/6 Immunohistochemical Staining of Urothelial Neoplasms: A Perspective

Figure 4

(a) High-grade urothelial carcinoma with partial loss of basal cells but diffuse staining for CK20. (b) High-grade urothelial carcinoma with almost complete loss of basal cells. (c) High-grade papillary urothelial carcinoma revealing diffuse immunohistochemical staining for CK20 and complete absence of basal layer with no staining for CK5/6.

(a)

(b)

(c)