Table 1

Clinico-pathological parameters of early- and late-onset BC

Group A
 Group B

Clinical features
 Case
 Mean age (years)
 Age range (years)
 Case
 Mean age (years)
 Age range (years)
Histological Type





Ductal
 45
 34
 25–40
 59
 53
 41–77
Lobular
 2
 28
 20–35
 0
 _
 _







Clinical Stage





TNM Stage I
 1
 40
 40
 2
 48
 45–50
TNM Stage II
 7
 33
 23–40
 21
 51
 42–61
TNM Stage III
 36
 35
 20–40
 33
 53
 41–77
TNM Stage IV
 3
 37
 36–38
 3
 57
 48–72







Tumor Differentiation





Grade 1
 4
 32
 20–40
 8
 52
 43–61
Grade 2
 32
 33
 18–40
 39
 47
 41–42
Grade 3
 11
 38
 33–40
 12
 56
 42–77







Lymph Node





Positive
 33
 35
 26–40
 48
 52
 42–77
Negative
 14
 31
 18–40
 11
 51
 41–65

Sinha et al. Molecular Cancer 2008 7:84   doi:10.1186/1476-4598-7-84