Pathologic M

This input is used for staging

Notes

**Note:** Distant metastasis includes peritoneal seeding, positive peritoneal cytology, and omental tumor that is not part of continuous extension. **Distant lymph nodes** **All subsites** Mesenteric, NOS Inferior mesenteric Superior mesenteric Para-aortic Porta hepatis (portal) (hilar) (in hilus of liver) Retropancreatic Retroperitoneal **All subsites EXCEPT lesser curvature** Hepatoduodenal

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:
Distant lymph node(s), NOS

Krukenberg tumor (metastasis to ovary(ies)
Malignant (positive) peritoneal cytology

Carcinomatosis

Distant metastasis WITH or WITHOUT distant lymph node(s)

Distant metastasis, NOS

Stated as M1
p1 pM1 Distant metastasis HISTOLOGICALLY confirmed:
Distant lymph node(s), NOS

Krukenberg tumor (metastasis to ovary(ies)
Malignant (positive) peritoneal cytology

Carcinomatosis

Distant metastasis WITH or WITHOUT distant lymph node(s)

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)