Table 4.

Immunohistochemical main antigen expression of AAM.

Antigen	Number of positive cases	Number of reported cases	Positive rate (%)
CD 34	20	23	87.0
Desmin	25	29	86.2
ER	37	38	97.4
PR	34	37	91.9
Smooth-muscle actin	21	31	67.7
S-100	5	32	15.6
Vimentin	23	23	100.0
Others
Actin	3	6	50.0
CD 117	0	3	0
CD 31	0	1	0
CK	0	5	0
EMA	0	1	0
H-caldesmon	1	2	50.0
β-Catenin	1	1	100.0

CD, cluster of differentiation; ER, estrogen receptor; PR, progesterone receptor; CK, cytokeratin; EMA, epithelial membrane antigen.