Association of insertion-deletions polymorphisms with colorectal cancer risk and clinical features

Table 6 Clinical characteristics of patients with colorectal cancer at diagnosis and follow-up

Characteristics	Cases (n = 140)
Tumor localization
Colon	25 (17.9)
Rectosigmoid	115 (82.1)
Tumor grade
G1, G2	130 (92.9)
G3, G4	10 (7.1)
Depth of invasion
T1, T2	37 (26.6)
T3, T4	89 (64.0)
Tx	13 (9.4)
Lymph node involvement
N0	77 (55.4)
N1, N2	47 (33.8)
Nx	15 (10.8)
Distant metastasis
M0	109 (78.4)
M1	13 (9.4)
Mx	17 (12.2)
AJCC stage
StageI	31 (22.3)
Stage II	43 (30.9)
Stage III	43 (30.9)
Stage IV	15 (10.8)
Unknown	7 (5.1)
Relapse, Yes	48 (34.5)
Death, Yes	18 (12.9)

Categorized data are presented by absolute numbers (percentage) and continuous data are presented as median (min-max). Tumors were classified according to the guidelines of the American Joint Committee on Cancer (AJCC) staging system.