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Table 1 Clinicopathological characteristics of breast cancer patients

From: Prevalence and characteristics of mouse mammary tumor virus-like virus associated breast cancer in China

Variable Number of cases (%)
Total 119
Age (years)
 <35 3 (2.52)
 35–50 59 (49.58)
 >50 57 (47.90)
Sample source (province)
 Hebei 84 (70.59)
 Zhejiang 35 (29.41)
Histological type
 Invasive ductal carcinoma 107 (89.92)
 Invasive lobular carcinoma 9 (7.56)
 Mucious Adenocarcinoma 3 (2.52)
Histological grade a
 Grade I 48 (40.34)
 Grade II 49 (41.18)
 Grade III 10 (8.40)
Lymph node involvement
 Negative 60 (50.42)
 Positive 59 (49.58)
  1. a Histological grade was performed only in specimens with invasive ductal carcinoma