Pathologic M
This input is used for staging
NAACCR 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: Note: M1 has subcategories of M1a, M1b and M1c. Assign M1 only when there is no information available to assign one of the subcategories Distant metastasis, NOS Stated as M1 [NOS] |
| c1A | cM1a | Skin, subcutaneous tissue or lymph node(s) beyond the regional lymph nodes | CLINICAL assessment only: Metastasis to skin or subcutaneous tissue beyond nodes WITH or WITHOUT distant nodes Metastasis to underlying cartilage, bone, skeletal muscle (excluding direct extension) WITH or WITHOUT distant nodes Distant lymph nodes, NOS Nodes in contiguous (secondary) and bidirectional (cephalad/caudal) primary nodal basins Stated as M1a |
| c1B | cM1b | Lung | CLINICAL assessment only: Metastasis to lung WITH or WITHOUT distant nodes Stated as M1b |
| c1C | cM1c | Other sites, or any site with elevated serum lactic dehydrogenase (LDH) | CLINICAL assessment only: Metastasis to all other visceral or distant sites WITH or WITHOUT metastasis to lungs Metastasis to all other visceral or distant sites plus distant nodes WITH or WITHOUT metastasis to lungs Any distant metastasis with elevated serum lactic dehydrogenases Carcinomatosis Stated as M1c |
| p1 | pM1 | Distant metastasis# | HISTOLOGICALLY confirmed: Note: M1 has subcategories of M1a, M1b and M1c. Assign M1 only when there is no information available to assign one of the subcategories Distant metastasis, NOS |
| p1A | pM1a | Skin, subcutaneous tissue or lymph node(s) beyond the regional lymph nodes | HISTOLOGICALLY confirmed: Metastasis to skin or subcutaneous tissue beyond nodes WITH or WITHOUT distant nodes Metastasis to underlying cartilage, bone, skeletal muscle (excluding direct extension) WITH or WITHOUT distant nodes Distant lymph nodes, NOS Nodes in contiguous (secondary) and bidirectional (cephalad/caudal) primary nodal basins |
| p1B | pM1b | Lung | HISTOLOGICALLY confirmed: Metastasis to lung WITH or WITHOUT distant nodes |
| p1C | pM1c | Other sites, or any site with elevated serum lactic dehydrogenase (LDH) | HISTOLOGICALLY confirmed: Metastasis to all other visceral or distant sites WITH or WITHOUT metastasis to lungs Metastasis to all other visceral or distant sites plus distant nodes WITH or WITHOUT metastasis to lungs Any distant metastasis with elevated serum lactic dehydrogenases Carcinomatosis |
| 88 | 88 | Not applicable | 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) |