DATA FORM FOR CANCER STAGING - EXTRAHEPATIC BILE DUCTS
Form # 785-1-028
| CLIN | PATH | DEFINITIONS | |
| PRIMARY TUMOR (T) | |||
| TX | Primary tumor cannot be assessed | ||
| T0 | No evidence of primary tumor | ||
| Tis | Carcinoma in situ | ||
| T1 | Tumor invades mucosa or muscle layer | ||
| T1a | Tumor invades mucosa | ||
| T1b | Tumor invades muscle layer | ||
| T2 | Tumor invades perimuscular connective tissues | ||
| T3 | Tumor invades adjacent structure(s), liver, pancreas, duodenum, gallbladder, colon, stomach | ||
| LYMPH NODE (N) | |||
| NX | Regional lymph nodes cannot be assessed | ||
| N0 | No regional lymph node metastasis | ||
| N1 | Metastasis in cystic duct, pericholedochal and/or hilar lymph nodes | ||
| N2 | Metastasis in peripancreatic (head only), periduodenal, periportal, celiac, and/or superior mesenteric and/or posterior pancreatic duodenal lymph nodes | ||
| DISTANT METASTASIS (M) | |||
| MX | Presence of distant metastasis cannot be assessed | ||
| M0 | No distant metastasis | ||
| M1 | Distant metastasis | ||
| CLIN | PATH | STAGE GROUPING | |||
| 0 | Tis | N0 | M0 | ||
| I | T1 | N0 | M0 | ||
| II | T2 | N0 | M0 | ||
| III | T1 | N1 | M0 | ||
| T1 | N2 | M0 | |||
| T2 | N1 | M0 | |||
| T2 | N2 | M0 | |||
| IVA | T3 | Any N | M0 | ||
| VB | Any T | Any N | M1 | ||
THE FINAL STAGE GROUPING (CLINICAL & PATHOLOGICAL) IS THE RESPONSIBILITY OF THE ATTENDING PHYSICIAN.
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