| 病理分级 | 富血供pNEN (n = 114) | 乏血供pNEN (n = 42) | χ2值 | p值 |
| 7.063 | 0.029* | |||
| G1, pNET | 40 (35.1%) | 9 (21.4%) | ||
| G2, pNET | 71 (62.3%) | 28 (66.7%) | ||
| G3, pNET/pNEC | 3 (2.6%) | 5 (11.9%) |