Table 1.
Characteristics of the CRC patients diagnosed with Blastocystis sp. infection using light microscopy (LM) (n = 107) and PCR (n = 95)
| Examined parameters | LM n = 107 |
PCR n = 95 |
|---|---|---|
| Age (years) | 65 | 66 |
| Median (range) | (38–88) | (40–88) |
| Sex, number of patients (%) | ||
| Women | 41 (38.3%) | 37 |
| Men | 66 (61.7%) | 58 |
| Tumour location*, number (%) | ||
| Right side | 24 (22.4%) | 22 |
| Left side | 83 (77.6%) | 73 |
| Tumour location*, number (%) | ||
| Rectum | 45 (42.1%) | 40 |
| Colon | 62 (57.9%) | 55 |
| TNM stage, number (%) | ||
| I | 18 (16.8%) | 18 |
| IIA | 36 (33.7%) | 33 |
| IIB | 0 | 0 |
| IIC | 1 (0.9%) | 0 |
| IIIA | 1 (0.9%) | 1 |
| IIIB | 28 (26.2%) | 23 |
| IIIC | 7 (6.5%) | 6 |
| IV | 16 (15%) | 14 |
| Astler-Coller stage, number (%) | ||
| A | 3 (2,8%) | 3 |
| B1 | 15 (14%) | 15 |
| B2 | 36 (33.6%) | 33 |
| B3 | 1 (0.9%) | 0 |
| C1 | 2 (1.9%) | 1 |
| C2 | 32 (29.9%) | 28 |
| C3 | 2 (1.9%) | 1 |
| D | 16 (15%) | 14 |
| Astler-Coller stage, number (%) | ||
| A + B | 55 (51.4%) | 51 |
| C + D | 52 (48.6%) | 44 |
| Grade, number (%)** | ||
| G1 | 7 (6.7%) | 6 |
| G2 | 78 (74.3%) | 68 |
| G3 | 14 (13.3%) | 14 |
| Mucinosum | 6 (5.7%) | 6 |
| Grade, number (%)** | ||
| G1 + G2 | 85 (81%) | 74 |
| G3 + mucinosum | 20 (19%) | 20 |
*Right-side location including the caecum, colon ascendens, and colon transversum. Left-side location including the colon descendens, sigmoid, and rectum. **Lack of grading (G feature) in two patients