Polypoid Carcinoma of the Oropharynx with Stromal Ossifying Myofibroblastic Proliferation: A Case Report and Literature Review

Table 1

Immunoreactivity of the neoplasm.

Antigen; (antibody clone)	dilution	Immunoreactivity
		Superficial layer	Core
ALK	1 : 25	−	−
BCL2	1 : 50	−	+f
Calponin	1 : 50	−	±
CD31	1 : 20	+gt	−
CD34	1 : 20	+gt	−
CD99	1 : 250	−	+
CD117	1 : 400	−	−
CK (clone AE1/AE3)	1 : 50	+f	−
CK 5/6	1 : 50	−	−
CKhmw; (clone 34βE12)	1 : 100	−	−
Desmin	1 : 50	−	−
EMA	1 : 50	±
Muscle-specific actin	1 : 50	−	+
Ki-67	1 : 75	35% positive	25%
P63	1 : 75	±f
S100		−	−
Smooth muscle actin	1 : 50	−	+
Vimentin	1 : 50	−	+

antibodies are from Dako and monoclonals unless otherwise indicated. antibody.
CK, cytokeratin; +, positive; −, negative; ±, positivity observed in <15% of cells in the sample; gt, granulation tissue; f, focal.