Table 1.
Clinical and pathological features of 3,034 patients with pNETs in the SEER database.
| Variables | SEER (N = 3,034) | % |
|---|---|---|
| Age, years | ||
| ≤60 | 1,621 | 53.4 |
| >60 | 1,413 | 46.6 |
| Median age (range) | 59 (11–97) | |
| Sex | ||
| Male | 1,655 | 54.5 |
| Female | 1,379 | 45.5 |
| Grade | ||
| I-II | 1,588 | 52.3 |
| III-IV | 2,81 | 9.3 |
| Unknown | 1,165 | 38.4 |
| Tumor type | ||
| Functional | 547 | 18.0 |
| Non-functional | 2,487 | 82.0 |
| Race | ||
| White | 2,359 | 77.8 |
| Black | 386 | 12.7 |
| Others | 289 | 9.5 |
| Location | ||
| Head | 907 | 29.9 |
| Body-tail | 1,350 | 44.5 |
| Others | 777 | 25.6 |
| AJCC stage | ||
| I | 879 | 29.0 |
| IA | 444 | 14.6 |
| IB | 435 | 14.4 |
| II | 607 | 20.0 |
| IIA | 208 | 6.9 |
| IIB | 399 | 13.1 |
| III | 83 | 2.7 |
| IV | 1,465 | 48.3 |
SEER, Surveillance Epidemiology and End Results; AJCC, American Joint Committee on Cancer.