Pathologic M
This input is used for staging
Notes
**Note:** Supraclavicular and transverse cervical lymph nodes are coded in regional lymph nodes because they are categorized as N rather than M in TNM.NAACCR Item
NAACCR #900| Pathologic M | Pathologic M Display | Description | Registrar Notes |
|---|---|---|---|
| c0 | cM0 | No distant metastasis | Unknown, metastasis not stated Distant metastasis cannot be assessed Not documented in patient record |
| c1 | cM1 | Distant metastasis | CLINICAL assessment only: Distant lymph node(s): Mediastinal (excluding superior mediastinal nodes) Distant lymph node(s), NOS Carcinomatosis Distant metastasis WITH or WITHOUT distant lymph nodes Distant metastasis, NOS Stated as M1 |
| p1 | pM1 | Distant metastasis | HISTOLOGICALLY confirmed: Distant lymph node(s): Mediastinal (excluding superior mediastinal nodes) Distant lymph node(s), NOS Carcinomatosis Distant metastasis WITH or WITHOUT distant lymph nodes Distant metastasis, NOS |
| 88 | 88 | Not applicable | Primary site/histology not TNM defined In situ case but no pTis is defined by TNM 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) |