An Immunohistochemical Study on the Expression of Sex Steroid Receptors in Canine Mammary Tumors

Table 1

Immunostaining percentage (%) and staining intensity (I) of ERα, ERβ, and PR in different canine mammary tumors.

S1.No.	Tumor type	ERα% (I)	ERβ% (I)	PR% (I)
1	Papillary cystadenoma	Negative	10.7 (+)	Negative
2	Fibrocystadenoma	Negative	33.6 (+)	44.4 (++)
3	Duct papilloma	Negative	57.2 (++)	18.5 (+)
4	Fibroadenoma	Negative	47.1 (+++)	Negative
5	Fibroadenoma	Negative	36.1 (++)	51.4 (++)
6	Mixed mammary tumor	Negative	Negative	53.5 (+++)
7	Mixed mammary tumor	Negative	25.2 (+)	Negative
8	Mixed mammary tumor	Negative	36.8 (++)	51.9 (+++)
9	Mixed mammary tumor	Negative	Negative	Negative
10	Mixed mammary tumor	Negative	57.6 (++)	60.2 (+++)
11	Mixed mammary tumor	Negative	79.6 (+++)	Negative
12	Papillary adenocarcinoma	Negative	10.5 (++)	Negative
13	Papillary adenocarcinoma	Negative	Negative	61.9 (+++)
14	Papillary cystadenocarcinoma	Negative	Negative	Negative
15	Papillary cystadenocarcinoma	Negative	15.9 (++)	60.5 (+)
16	Papillary cystadenocarcinoma	Negative	Negative	46.4 (++)
17	Papillary cystadenocarcinoma	Negative	11.3 (++)	Negative
18	Papillary cystadenocarcinoma	Negative	11.1 (+)	72.5 (+++)
19	Solid adenocarcinoma	Negative	48.5 (++)	17 (++)
20	Solid adenocarcinoma	Negative	26 (+)	Negative
21	Solid adenocarcinoma	Negative	77.3 (+++)	Negative
22	Complex adenocarcinoma	Negative	29.2 (+)	Negative
23	Complex adenocarcinoma	Negative	94.7 (++)	Negative
24	Complex adenocarcinoma	Negative	29.2 (+)	32.3 (++)
25	Carcinosarcoma	Negative	16.1 (++)	Negative
26	Carcinosarcoma	15.96 (+++)	91.1 (+++)	Negative
27	Sebaceous adenocarcinoma	Negative	Negative	19.4 (+++)
28	Squamous cell carcinoma	Negative	33.2 (+)	43.5 (+++)
29	Hemangiopericytoma	Negative	99 (+++)	35.8 (+++)