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Table 1 Patient demographics and clinical data

From: Breast cancer: comparison of quantitative dual-layer spectral CT and axillary ultrasonography for preoperative diagnosis of metastatic axillary lymph nodes

Patient demographics
Number of patients 34
Number of axillae 36
Age (years mean ± standard deviation) 60.3 ± 15.7
Side
 Right 18
 Left 14
 Bilateral 2
Patient history
 Primary breast cancer 21
 Recurrent ipsilateral breast cancer 9
 Previous contralateral breast cancer 4
Type of breast cancer
 Invasive ductal carcinoma 29
 Invasive lobular carcinoma 2
 Combined 2
 Apocrine carcinoma 1
Oestrogen receptor-positive tumour
 Yes 26
 No 8
HER2-positive tumour
 Yes 7
 No 27
Previous ipsilateral radiotherapy
 Yes 6
 No 28
Previous adjuvant chemotherapy
 Yes 7
 No 27
Sentinel lymph node biopsy 29
 Metastatic 16
 Non-metastatic 13
Axillary lymph node dissection 7
 Metastatic 7
 Non-metastatic 0
  1. HER2 Human epidermal growth factor receptor 2