Table 3.

Association between luminal A-like breast cancer and magnetic resonance imaging features

		Luminal A	χ2 p-value	Univariate analysis		Multivariate analysis
				OR (CI 95%)a	p-value	OR (CI 95%)a	p-value
No. of patients		45
Tumour size	Median (mm) Range (mm)	18 6–100
≥ 2 cm		19/45	0.024	0.438 (0.213–0.902)	0.025	0.411 (0.151–1.118)	0.082
T2 intensity	Hypointensity Isointensity Hyperintensity	20/45 12/45 13/45	0.941	0.945 (0.464–1.927) 1.154 (0.513–2.595) 0.939 (0.431–2.043)	0.877 0.729 0.873
Mass enhancement		35/45	0.525	0.753 (0.313–1.810)	0.526
Rim enhancement		3/35	< 0.001	0.101 (0.029–0.358)	< 0.001	0.163 (0.040–0.657)	0.011
Intralesional necrosis		10/45	0.001	0.252 (0.112–0.566)	0.001	0.711 (0.228–2.220)	0.557
Perilesional oedema		12/45	< 0.001	0.199 (0.091–0.436)	< 0.001	0.419 (0.149–1.175)	0.098
Abnormal lymph nodes		10/45	0.01	0.352 (0.157–0.791)	0.012	0.600 (0.212–1.693)	0.334
Intensity-to-time curve	Type I Type II Type III	4/45 11/45 30/45	0.977	1.073 (0.306–3.769) 0.919 (0.405–2.083) 1.048 (0.495–2.216)	0.912 0.839 0.903
ADC value	Very low Low Intermediate	20/40 19/40 1/40	0.182	0.491 (0.228–1.058) 1.944 (0.899–4.200) 2.154 (0.131–35.34)	0.069 0.091 0.591
Extent of disease	Unifocal Multifocal Multicentric	19/45 10/45 16/45	0.148	0.828 (0.405–1.692) 0.599 (0.263–1.364) 2.097 (0.957–4.593)	0.605 0.222 0.064

^aOR Odds ratio, CI Confidence interval, ADC Apparent diffusion coefficient