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Table 1 Clinicopathological characteristics of patients with breast cancer

From: High-risk human papillomaviruses and Epstein–Barr virus in breast cancer in Lebanese women and their association with tumor grade: a molecular and tissue microarray study

Characteristic Categories Number (%)
Age ≤ 50 50 (49)
> 50 52 (51)
Histopathological Subtypes of Breast Cancer Invasive Ductal Carcinoma (IDC) 92 (90.2)
Invasive Lobular Carcinoma (ILC) 6 (5.9)
Mixed Carcinoma (IDC + ILC) 4 (3.9)
Nottingham Histological Grade I 6 (5.8)
II 31 (30.4)
III 65 (63.8)
Tumor Stage (pT) pT1 9 (8.8)
pT2 73 (71.6)
pT3 13 (12.7)
pT4 7 (6.9)
Lymph Node Involvement (pN) pN0 29 (28.4)
pN1 31 (30.4)
pN2 19 (18.6)
pN3 15 (14.7)
Unknown 8 (7.9)
Estrogen Receptor (ER) Status ER+ 79 (77.5)
ER- 20 (19.6)
Unknown 3 (2.9)
Progesterone Receptor (PR) Status PR+ 66 (64.7)
PR− 33 (32.4)
Unknown 3 (2.9)
HER2 Status Positive (3+) 8 (7.9)
Equivocal (2+) 22 (21.6)
Negative (0–1+) 69 (67.6)
Unknown 3 (2.9)
Ki-67 Proliferative Index (PI) Low (< 10%) PI 16 (15.7)
Intermediate (10–20%) PI 12 (11.8)
High (> 20%) PI 25 (24.5)
Unknown 49 (48)
HPV Expression Invasive ductal carcinoma (IDC) 61 (59.8)
Invasive lobular carcinoma (ILC) 3 (2.9)
Mixed carcinoma (IDC + ILC) 1 (0.9)
Invasive micropapillary carcinoma 1 (0.9)
EBV Expression Invasive ductal carcinoma (IDC) 33 (32.4)
Invasive lobular carcinoma (ILC) 5 (4.9)
Mixed carcinoma (IDC + ILC) 2 (1.9)
Invasive micropapillary carcinoma 1 (0.9)