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Table 1 Descriptive statistics of studied population

From: Cytokeratin 5/6 and cytokeratin 8/18 expression in triple negative breast cancers: clinicopathologic significance in South-Asian population

  n (%)
Age (years)a 48.85 ± 11.49
Age groups (years)
 ≤ 30 5 (3.3)
 31–50 84 (56)
 > 50 61 (40.7)
Tumor size (unit)a 4.01 ± 1.99
Tumor stage
 T1 26 (17.3)
 T2 79 (52.7)
 T3/T4 45 (30)
Ki67 index (%) 46.89 ± 23.88
ki67 index groups (%)
 ≤ 15 17 (11.3)
 16–24 8 (5.3)
 25–44 45 (30)
 > 44 80 (53.3)
Nodal status
 Positive 64 (42.7)
 Negative 86 (57.3)
Nodal stage
 No 88 (58.7)
 N1 30 (20)
 N2 13 (8.7)
 N3 19 (12.7)
Histological subtypes
 IDC 127 (84.7)
 Papillary 6 (4)
 Medullary 1 (0.7)
 Metaplastic 14 (9.3)
 Mixed 2 (1.3)
Tumor grade
 Grade-I 1 (0.7)
 Grade-II 19 (12.7)
 Grade-III 130 (86.7)
Lymphocytic infiltration
 Absent 15 (10)
 Moderate 110 (73.3)
 Severe 25 (16.7)
Lymphovascular invasion
 Present 36 (24)
 Absent 114 (76)
Dermal lymphatic invasion
 Present 10 (6.7)
 Absent 140 (93.3)
Type of surgery
 Modified radical mastectomy 94 (62.7)
 Simple mastectomy with sentinel lymph node dissection 42 (28)
 Wide local excision 14 (9.3)
Necrosis
 Absent 21 (14)
 Moderate 90 (60)
 Severe 39 (26)
Fibrosis
 Mild 42 (28)
 Moderate 88 (58.7)
 Severe 20 (13.3)
Insitu component
 Present 58 (38.7)
 Absent 92 (61.3)
Pagetoid spread
 Present 2 (1.3)
 Absent 148 (98.7)
Perinodal extension
 Present 30 (20)
 Absent 120 (80)
Adjuvant chemotherapy (n = 101)
 Yes 98 (97)
 No 3 (3)
Adjuvant radiotherapy (n = 101)
 Yes 69 (68.3)
 No 32 (31.7)
Reoccurrence (n = 101)
 Yes 18 (17.8)
 No 83 (82.2)
  1. aMean ± SD