| 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 lamina propria or submucosa |
|
|
|
T2 |
Tumor invades muscularis propria |
|
|
|
T3 |
Tumor invades through the muscularis propria
into the subserosa or into the non-peritonealized
perimuscular tissue (mesentery or retroperitoneum) with
extension 2 cm or less |
|
|
|
T4 |
Tumor perforates the visceral peritoneum, or
directly invades other organs and structures, (includes
other loops of small intestine, mesentery, or
retroperitoneum more than 2 cm, and the abdominal wall by
way of the serosa; for the duodenum only includes
invasion of the pancreas). |
| |
|
LYMPH
NODE (N) |
|
|
|
NX |
Regional lymph nodes cannot be assessed |
|
|
|
N0 |
No regional lymph node metastasis |
|
|
|
N1 |
Regional lymph node metastasis |
| |
|
DISTANT METASTASIS
(M) |
|
|
|
MX |
Presence of distant metastasis cannot be
assessed |
|
|
|
M0 |
No distant metastasis |
|
|
|
M1 |
Distant metastasis |