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Comparison of pNET patient distributions between TNM and aTNM staging system by each stage.
| Stage | TNM (%) | aTNM (%) |
|---|---|---|
| I | 879 (29.0) | 455 (15.0) |
| IA | 444 (14.6) | - |
| IB | 435 (14.4) | - |
| II | 607 (20.0) | 1,084 (35.7) |
| IIA | 208 (6.9) | 786 (25.9) |
| IIB | 399 (13.1) | 298 (9.8) |
| III | 83 (2.7) | 781 (25.7) |
| IV | 1,465 (48.3) | 714 (23.5) |
