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

Table 2 Breast cancer characteristics in study population

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)*

^aReported for patients with information on lymph node analysis in case file;
^bPositive nodes among the 37 cases with information on lymph node analysis. Mean number of positive nodes was estimated at
The entries in boldface/italics represent the total case files for which information on the relevant variable was available

ISSN: 1471-2407