Table 2.
Pathologic characteristics of the 171 resected PNETs
| LDP (n = 73) | ODP (n = 98) | P value | |
|---|---|---|---|
| Grade, n (%): | |||
| Low (G1) | 54 (74 %) | 71 (72 %) | 0.824 |
| Intermediate (G2) | 15 (20 %) | 20 (21 %) | 0.982 |
| High (G3) | 4 (6 %) | 7 (7 %) | 0.760 |
| Lymphovascular invasion, n (%) | 17 (23 %) | 35 (35 %) | 0.094 |
| Positive lymph nodes, n (%) | 11 (15 %) | 19 (19 %) | 0.426 |
| Distant metastasis, n (%) | 3 (4 %) | 11 (11 %) | 0.093 |
| Positive resection margins, n (%) | 2 (3 %) | 7 (7 %) | 0.303 |
| WHO classification, n (%): | |||
| Well-differentiated tumor (WDT) | 60 (82 %) | 72 (74 %) | 0.200 |
| Well-differentiated carcinoma (WDCa) | 9 (12 %) | 19 (19 %) | 0.296 |
| Poorly differentiated carcinoma (PDCa) | 4 (6 %) | 7 (7 %) | 0.760 |
| TMN stage, n (%): | |||
| Stage 1 | 34 (47 %) | 38 (39 %) | 0.348 |
| Stage 2 | 28 (38 %) | 37 (38 %) | 0.100 |
| Stage 3 | 8 (11 %) | 15 (15 %) | 0.499 |
| Stage 4 | 3 (4 %) | 8 (8 %) | 0.356 |