KRT7 and Papillary Craniopharyngioma: Early observations showed that 100% and 40% of the adamantinomatous and papillary craniopharyngiomas were positive for CK7, CK8, and CK14, respectively, where CK7 and CK8 were present in the ciliated cuboidal epithelia, and CK7 and CK14 were present in the metaplastic squamous cells of the RCCs [69].