Pathologic M
This input is used for staging
Notes
**Note:** The lesser sac of the peritoneum, or omental bursa, is the cavity in the abdomen formed by the lesser and greater omentum; the pancreas forms part of the posterior wall of the lesser sac. **Distant lymph nodes** Celiac Pancreaticosplenic (pancreaticolienal) Splenic (lineal), NOS Splenic hilum Splenic artery Gastroepiploic (gastro-omental), left SuprapancreaticNAACCR Item
NAACCR #900| Pathologic M | Pathologic M Display | Description | Registrar Notes |
|---|---|---|---|
| c0 | cM0 | No distant metastasis | Unknown; distant metastasis not stated Distant metastasis cannot be assessed Not documented in patient record |
| c1 | cM1 | Distant metastasis | CLINICAL assessment only: Distant lymph nodes, NOS Seeding of peritoneum, even if limited to the lesser sac region; positive peritoneal cytology Carcinomatosis Distant metastasis WITH or WITHOUT distant lymph nodes Distant metastasis, NOS Stated as M1 |
| p1 | pM1 | Distant metastasis | HISTOLOGICALLY confirmed: Distant lymph nodes, NOS Seeding of peritoneum, even if limited to the lesser sac region; positive peritoneal cytology Carcinomatosis Distant metastasis WITH or WITHOUT distant lymph nodes Distant metastasis, NOS |
| 88 | 88 | Not applicable | Primary site/histology not TNM defined Death certificate only (DCO) case |
| <BLANK> | BLANK | See Registrar Notes | Pathologic classification criteria not met No pathologic workup for T and N categories and no pathologic evidence of metastasis Only Pathologic Stage Group documented (no T, N, or M information available) |