. 2012 May 24;6(3):345–353. doi: 10.1007/s12105-012-0365-4

Table 2.

Immunohistochemical staining

	CK7	CK5/6	p63	S-100 protein	SMA
MEA (n = 12)	Neg (8 %) Focal (59 %)^a Diffuse (33 %)^a	Neg (8 %) Focal (42 %)^b Diffuse (50 %)^b	Neg (17 %) Focal (58 %)^b Diffuse (25 %)^b	Neg (100 %)	Neg (100 %)
CA (n = 10)	Diffuse (100 %)^a	Diffuse (100 %)^b	Diffuse (100 %)^b	Neg (20 %) Focal (30 %) Diffuse (50 %)	Neg (10 %) Diffuse (90 %)^b
CAC ACC-type (n = 2)	Diffuse (100 %)^a	Diffuse (100 %)^b	Diffuse (100 %)^b	Diffuse (100 %)^b	Diffuse (100 %)^b
CAC conventional-type (n = 2)	Neg (50 %) Diffuse (50 %)	Neg (100 %)	Neg (100 %)	Neg (100 %)	Neg (100 %)
JPG (n = 4)	Neg (100 %)	Neg (100 %)	Neg (100 %)	Focal (100 %)^c	Neg (100 %)

MEA middle ear adenoma, CA ceruminous adenoma, CAC ceruminous adenocarcinoma, ACC adenoid-cystic carcinoma type, JPG jugulotympanic paraganglioma, Neg negative

^aPredominantly luminal pattern

^bPredominantly abluminal pattern

^cStaining of sustentacular cells