Table 3.

Characteristic expression patterns of typical keratins in selected human carcinomas

Only diagnostically relevant data as detectable by monoclonal antibodies widely established in clinical pathology are presented (for references, see Moll 1998; Chu and Weiss 2002b; and text). Explanation of symbols: filled circle, extended staining of most tumor cases; open dotted circle, focal/heterogeneous staining of some but not all cases; open circle, no staining

^aIn rare cases focal staining may be observed

^bFocal or extended staining in a subpopulation of tumor cases, corresponding to the basal-like phenotype

^cNon-mucinous types

^dPreferentially/more extended in poorly differentiated cases

^eIn rare cases focal staining may be observed; however, squamous cell carcinomas of the cervix uteri may express K7 extendedly