Table 1.
Demographics of patients. Age, sex, tumor location, and TNM (Tumor, Nodes, Metastasis-classification) stages were separately analyzed for patients with peripheral blood (PB) (A) or inferior mesenteric vein blood (IMV) (B) samples. Lymph node involvement, carcinoembryonic antigen (CEA), and carbohydrate antigen 19-9 (CA19-9) levels in the whole cohort were also analyzed (C).
| (A) Peripheral Vein Blood (PB) | ||
| Groups | Patients (n) | Percentage (%) |
| Age (years) | ||
| <60 | 55 | 43% |
| ≥60 | 74 | 57% |
| Sex | ||
| Male | 75 | 58% |
| Female | 54 | 42% |
| Tumor location of the disease | ||
| Colon | 89 | 69% |
| Others | 40 | 31% |
| T classification (TNM Stage) | ||
| Earlier than T2 | 123 | 72% |
| Later than T3 | 48 | 28% |
| (B) Inferior Mesenteric Vein Blood (IMV) | ||
| Groups | Patients (n) | Percentage (%) |
| Age (years) | ||
| <60 | 47 | 49% |
| ≥60 | 48 | 51% |
| Sex | ||
| Male | 56 | 59% |
| Female | 39 | 41% |
| Tumor location of the disease | ||
| Colon | 64 | 67% |
| Others | 31 | 33% |
| T classification (TNM Stage) | ||
| Earlier thanT2 | 60 | 63% |
| Later than T3 | 35 | 37% |
| (C) Lymph Node Metastasis | ||
| Groups | Patients (n) | Percentage (%) |
| Negative | 82 | 73% |
| Positive | 30 | 27% |
| Preoperative Serum CEA (ng/mL) | ||
| Patients (n) | Percentage (%) | |
| ≤5 | 81 | 65% |
| >5 | 44 | 35% |
| Preoperative Serum CA19-9 (U/mL) | ||
| Patients (n) | Percentage (%) | |
| <35 | 106 | 87% |
| ≥35 | 16 | 13% |
TNM: Tumor, Nodes, Metastasis-classification