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Table 1 Population demographics and histological features reported as mean (SD) or prevalence (percentage)

From: A critical review of the chest CT scans performed to detect asymptomatic synchronous metastasis in new and recurrent breast cancers

Features Mean/prevalence
Age (in years at the time of surgery) 61 (13.1)
Histologic type
 DCIS 58 (8)
 IDC 553 (77)
 ILC 88 (12)
 Others 27 (3)
Clinical stage
 Stage 0 (in situ)# 51 (7)
 Stage I 224 (31)
 Stage II 275 (38)
 Stage III 61 (8)
 Stage IV 7 (1)
 NACT 30 (4)
 Recurrence 56 (8)
 Benign and others 22 (3)
Histological grade of invasive cancer
 Grade 1 100 (14)
 Grade 2 261 (36)
 Grade 3 261 (36)
 Others 104 (15)
Other histological features*
 Estrogen receptor positive 550 (85)
 Progesterone receptor positive 478 (74)
 HER2 amplified 83 (13)
 LVI positive 135 (21)
 Node positive 241 (39)
  1. DCIS ductal carcinoma in situ, LCIS lobular carcinoma in situ, IDC invasive ductal cancer, ILC invasive lobular cancer, NACT neoadjuvant chemotherapy, HER2 human epidermal growth factor receptor 2, LVI lymphovascular invasion
  2. *These histological features are calculated on available data on invasive disease only
  3. #In situ disease is composed of both DCIS and LCIS; nine of the DCIS were recurrent and hence counted under recurrences in clinical stage