Figure 6.

Immunohistochemical features of the lesions included in the differential diagnosis of PA with extensive squamous metaplasia

Antibody Specificity
Lesion	CK 7	CK 8	CK 19	CK 20	Hmw CKs	EMA	CEA	GFAP	S-100	SMA	MSA	p63	Vim
PA	+	+	+	-	+	+	+	+	+	+	+	+	+
MEC	+	+	+	-	+	+	a	+	-	-	-	a	-
SCC	-	+	a	-	+	+	+	Nf	-	-	nf	a	-
KC	+	-	+	nf	nf	nf	nf	Nf	-	-	nf	nf	nf

PA (Pleomorphic adenoma), MEC (Mucoepidermoid carcinoma), SCC (Squamous cell carcinoma), KC (Keratocystoma), Vim (Vimentin)

(-) negative; (+) positive; (a) variable expression; (nf) data not found