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Table 2 Patient characteristics at BC diagnosis and at follow-up

From: Co-occurrence of thyroid and breast cancer is associated with an increased oncogenic SNP burden

  BC only BC and TC p-value
Mean / No of cases SD / % Mean / No of cases SD / %
No. of patients 15   19   
Age at follow-up 67.3 9.2 62.3 10.5 0.16
BC clinical characteristics
 Age at BC diagnosis 47.7 10.2 54.4 11.2 0.079
 BC grade    0.363
  1 3 37.5% 3 20% 1
  2 1 12.5% 6 40% 0.104
  3 4 50% 6 40% 1
 BC T stage    0.393
  1 4 36.4% 7 58.3% 0.715
  2 6 54.5% 5 41.7% 0.475
  4 1 9.1% 0 0% 0.441
 Lymph node metastasis 5 33.3% 8 42.1% 0.728
 Vascular invasion 2 22.2% 2 15.4% 1
 HER2-positivity 6 40% 4 21% 0.276
 ER-positivity 11 73% 10 52% 0.296
 PR-positivity 8 53% 8 42% 0.730
 Invasive ductal carcinoma 13 86.7% 16 84.2% 1
 Distant metastasis 3 20% 2 10.5% 0.634
 BC radiation therapy 14 93.2% 17 89.5% 1
 BC chemotherapy 10 66.7% 9 60% 1
 BC hormone therapy 11 73.3% 10 62.5% 0.704
 BC targeted therapy 1 6.7% 2 12.5% 1
 BC relapse 4 26.7% 3 15.8% 0.672
TC clinical characteristics
 Age at TC diagnosis 53.5 15
 Papillary histology 18 94.%
 Follicular histology 1 5.3%
 Lymph node metastasis 4 21%