Primary Tumor (T) | |
Regional Lymph Nodes (N) | |
Distant Metastasis (M) | |
This view displays the TNM formula. Please select appropriate value from the list for T/N/M variables. The result will be displayed, based on your selection of variables.
Assignment of AJCC TNM
AJCC data elements required for staging are identified with an asterisk (*).
*Stage classification based on time frame and criteria(see Rules for Classification)
The same classification should be used throughout the assignment of TNM and stage group.
T Category | T Criteria |
---|---|
TX | Tumor cannot be assessed |
T1 | Tumor limited to the pancreas‡, 2 cm in greatest dimension |
T2 | Tumor limited to the pancreas‡, 2 cm but 4 cm in greatest dimension |
T3 | Tumor limited to the pancreas‡, 4 cm in greatest dimension; or tumor invading the duodenum, ampulla of Vater, or common bile duct |
T4 | Tumor invading adjacent organs (stomach, spleen, colon, adrenal gland) or the wall of large vessels (celiac axis, superior mesenteric artery/vein, splenic artery/vein, gastroduodenal artery/vein, portal vein) |
‡Limited to the pancreas means there is no invasion of adjacent organs (stomach, spleen, colon, adrenal gland) or the wall of large vessels (celiac axis or the superior mesenteric artery). Extension of tumor into peripancreatic adipose tissue is NOT a basis for staging.
Note: Multiple tumors should be designated as such (the largest tumor should be used to assign T category):
Primary Tumor Suffix
(m) Multiple synchronous primary tumors
N Category | N Criteria |
---|---|
NX | Regional lymph nodes cannot be assessed |
N0 | No tumor involvement of regional lymph node(s) |
N1 | Tumor involvement of regional lymph node(s) |
Regional Lymph Nodes Suffix
(f) FNA or core needle biopsy
M Category | M Criteria |
---|---|
cM0 | No distant metastasis |
cM1 | Distant metastasis |
cM1a | Metastasis confined to liver |
cM1b | Metastases in at least one extrahepatic site (e.g., lung, ovary, nonregional lymph node, peritoneum, bone) |
cM1c | Both hepatic and extrahepatic metastases |
pM1 | Microscopic confirmation of distant metastasis |
pM1a | Microscopic confirmation of metastasis confined to liver |
pM1b | Microscopic confirmation of metastases in at least one extrahepatic site (e.g., lung, ovary, nonregional lymph node, peritoneum, bone) |
pM1c | Microscopic confirmation of both hepatic and extrahepatic metastases |