Table 2.
Study measurements
| Study characteristics | N (%) |
|---|---|
| Circumferential margins | |
| Free of tumor | 73 (74.5) |
| Tumor ingrowth (0 mm) | 25 (25.5) |
| Circumferential margins (mm) | |
| Median | 1.0 |
| Mean | 2.0 |
| Range | 0.0–10.0 |
| Tumor growth | |
| Spray | 59 (60.2) |
| Pushing | 39 (39.8) |
| Invasive growth | |
| Lymph vascular space | 39 (39.8)) |
| Perineural | 25 (25.5) |
| Tumor length (endoscopy), cm | |
| ≤5 | 70 (71.4) |
| >5 | 28 (28.6) |
| Median (range) | 4.5 (0–14) |
| Median nodal yield (range) | |
| Examined number | 11 (1–33) |
| Positive (malignant) number | 1 (0–32) |
| Positive lymph nodes | |
| ≤4 | 81 (82.7) |
| >4 | 17 (17.3) |
| Lymph node ratio | |
| ≤0.20 | 69 (70.4) |
| >0.20 | 29 (29.6) |