Table 2. Clinical and pathological characteristics of tumor tissue.

Characteristic	Description
Type of Cancer	Ductal in situ: 2 (3.9%) Infiltrating Lobular: 2 (3.9%) Infiltrating Ductal: 32 (67.4%) Infiltrating Canalicular: 7 (13.7%) Paget’s disease: 1 (1.9%) Adenocarcinoma: 1 (1.9%) Apocrine Carcinoma: 1 (1.9%) ND: 5 (9.8%)
Progesterone Receptor	Positive: 22 (43.1%) Negative: 11 (21.6%) ND: 18 (35.3%)
Estrogen Receptor	Positive: 25 (49%) Negative: 9 (17.7%) ND: 17 (33.3%)
HER2	Positive: 10 (19.6%) Negative: 15 (29.4%) ND: 26 (51%)
Stage	I: 2 (3.9%) IIa: 5 (9.8%) IIb: 12 (23.5%) IIIa: 18 (35.3%) IIIb: 9 (17.6%) IV: 5 (9.8%)

Information regarding characteristics of the tumor tissue and the status of estrogen receptors and HER2 gene was obtained from the medical records of patients.