Table 3 Characteristics of the study population.
From: Mutation profiling of cancer drivers in Brazilian colorectal cancer
Characteristics (N = 91) | Frequency | (%) |
|---|---|---|
Mean | (range) | |
Age at diagnostic | 61.18 | (29–88) |
Gender | ||
Male | 49 | 53.8 |
Female | 42 | 46.2 |
Self-Assessed Skin Color (n = 89) | ||
White | 76 | 85.4 |
Black | 2 | 2.2 |
Brown | 10 | 11.2 |
Yellow | 1 | 1.1 |
Primary disease site | ||
Right-sided | 20 | 22.0 |
Cecum | 4 | 20.0 |
Ascending colon | 9 | 45.0 |
Transverse colon | 7 | 35.0 |
Left-sided | 71 | 78.0 |
Sigmoid colon | 31 | 43.7 |
Rectosigmoid junction | 15 | 21.1 |
Rectum | 25 | 35.2 |
Stage (at diagnosis) | ||
0 | 3 | 3.3 |
I | 30 | 33.0 |
II | 38 | 41.8 |
III | 16 | 17.6 |
IV | 4 | 4.4 |
TNM | ||
Primary Tumor (T) | ||
Tis | 5 | 5.5 |
T1 | 6 | 6.6 |
T2 | 28 | 30.8 |
T3 | 42 | 46.2 |
T4 (a,b) | 10 | 11.0 |
Regional Lympho Nodes (N) | ||
N0 | 69 | 75.8 |
N1 (a,b,c) | 15 | 16.5 |
N2 (a,b) | 7 | 7.7 |
Distant Metastasis (M) | ||
M0 | 87 | 95.6 |
M1a | 3 | 3.3 |
M1b | 1 | 1.1 |
Histologic Grade | ||
I | 10 | 11.0 |
II | 77 | 84.6 |
III | 4 | 4.4 |
Angiolymphatic invasion (n = 90) | 17 | 18.9 |
Perineural invasion (n = 86) | 6 | 7.0 |
Adjuvant chemotherapy | 30 | 33.0 |
Radiotherapy (n = 90) | 4 | 4.4 |
Tumor Recurrence (n = 89) | 3 | 3.4 |
MSI (n = 90) | ||
MSI-negative | 78 | 86.7 |
MSI-positive | 12 | 13.3 |
