Table 1 Clinical data of included colon carcinoma patients

number of patients

n = 310

of these: male

n = 189 (61%)

female

n = 121 (39%)

median age

64 y (range 28–91 y)

median follow up

91 mo (range 1–177 mo)

adjuvant chemotherapy

n = 48 (16%)

tumour site

caecum

n = 31 (10.0%)

colon ascendens

n = 51 (16.5%)

flexura hepatica

n = 21 (6.8%)

colon transversum

n = 32 (10.3%)

flexura lienalis

n = 15 (4.8%)

colon descendens

n = 14 (4.5%)

colon sigmoideum

n = 146 (47.1%)

tumour stage (UICC) or lymph node metastasis

II or N0

n = 178 (57.4%)

III or N+

n = 132 (42.6%)

grading

low-grade (G1 and G2)

n = 257 (82.9%)

high-grade (G3 and G4)

n = 53 (17.1%)

depth of invasion

pT2

n = 24 (7.7%)

pT3

n = 255 (82.3%)

pT4

n = 31 (10.0%)

distant metastasis after 5 years follow up

n = 62 (20.0%)