Table 1 Distribution of clinicopathological parameters and immunohistochemical markers
Categoryn (%)
Median age, years (range)64.2 (27–96)
NHG
    1128 (25)
    2215 (42)
    3169 (33)
Tumour type
    Ductal338 (66)
    Lobular71 (14)
    Tubular36(7)
    Others67 (13)
Tumour size
    <20 mm323 (63)
    ⩾20 mm189 (37)
Nodal status
    N0323 (63)
    N1189 (37)
ERα
    0–1%70 (15)
    2–10%2 (0.4)
    11–75%33 (7)
    76–100%374 (78)
ERβ
    0–1%160 (46)
    2–10%14 (4)
    11–75%87 (25)
    76–100%90 (25)
HER2
    0145 (49)
    1+99 (34)
    2+27 (9)
    3+24 (8)
Ki67
    0–10%182 (39)
    11–75%236 (50)
    76–100%55 (11)
  • NHG, Nottingham Histological Grade; ER, oestrogen receptor.