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Table 2 Breast cancer characteristics in study population

From: Evolutionary aspects of non-metastatic breast cancer after primary treatment in a sub-Saharan African setting: a 16-year retrospective review at the Douala general hospital, Cameroon

Variable Range Frequency (%)
Tumour location   
1. Affected quadrant  
 Upper outer quadrant   210(82)
 Upper inner quadrant   19(7.4)
 Subareolar   14(5.5)
 Lower outer quadrant   7(2.7)
 Lower inner quadrant   6(2.3)
   256(100)
2. Affected breast  
 Left   152(58.5)
 Right   107(41.2)
 Bilateral   1(0.4)
   260(100)
3. Area of lesion  
 Unifocal   34(81.0)
 Multifocal   8(19.1)
   42(100)
Tumour classification  
 T0   4(1.5)
 T1   26(10.1)
 T2   60(23.2)
 T3   98(37.7)
 T4   72(27.5)
   260(100)
Histological type  
 Invasive ductal carcinoma   224(86.2)
 Invasive lobular carcinoma   12(4.6)
 Intraductal carcinoma   8(3.1)
 Invasive medullary carcinoma   6(2.3)
 Apocrine carcinoma   3(1.2)
 Comedo carcinoma   3(1.2)
 Lymphoma   1(0.4)
 Others   3(1.2)
   260(100)
Analysed lymph nodes a 1–5 13(35.1)
  6–10 12(32.4)
  11–15 11(29.7)
  16–22 1(2.7)
   37(100)
Positive lymph nodes b 0 5 (13.5)
  1–3 14 (37.8)
  ≥4 18 (48.6)
   37 (100)
  1. aReported for patients with information on lymph node analysis in case file;
  2. bPositive nodes among the 37 cases with information on lymph node analysis. Mean number of positive nodes was estimated at
  3. The entries in boldface/italics represent the total case files for which information on the relevant variable was available