Pathologic T

This input is used for staging


**Note 1:** Tumors of the head of the pancreas arise to the right of the superior mesenteric-portal vein confluence. **Note 2:** Islets of Langerhans are distributed throughout the pancreas. * An islet tumor is coded to the subsite of the pancreas in which the tumor arises if the information is available **Note 3:** Tumor size must be known to assign a value of T1 or T2. You may use a physician’s statement of the T category if this is the only information in the medical record. * If the tumor appears to be in the T1 or T2 categories, but no size or category is specified, assign TX **Note 4:** Assign the appropriate T category (T1, T2) based on the tumor size for the following descriptions Confined to pancreas Localized, NOS


Pathologic T Pathologic T Display Description Registrar Notes
pX pTX Primary tumor cannot be assessed Pathologic classification criteria met, evaluation done:
Physician unable to assess T
Surgical resection of primary tumor, extension not stated
Tumor size (TS) unknown for T categories where TS needed to determine T
Physician assigns pTX, no other information available to determine T
p0 pT0 No evidence of primary tumor
pIS pTis Carcinoma in situ In situ, intraepithelial, noninvasive
Pancreatic Intraepithelial Neoplasia III (PanInIII)
PanIN-III classification
p1 pT1 Tumor limited to pancreas, 2 cm or less in greatest dimension Stated as T1
p2 pT2 Tumor limited to pancreas, more than 2 cm in greatest dimension Stated as T2
p3 pT3 Tumor extends beyond pancreas, but
WITHOUT involvement celiac axis or superior mesenteric artery
Extension to peripancreatic tissue, NOS
Fixation to adjacent structures, NOS

Adjacent stomach
Ampulla of Vater
Blood vessel(s) (major):
Gastroduodenal artery
Hepatic artery
Pancreaticoduodenal artery
Portal vein
Superior mesenteric vein
Body of stomach
Extrahepatic bile duct(s)
Mesenteric fat
Stomach, NOS
Transverse colon, including hepatic flexure

Stated as T3
p4 pT4 Tumor involves celiac axis or superior mesenteric artery Tumor is inseparable from the celiac axis
Tumor is inseparable from the superior mesenteric artery
Superior mesenteric artery
Superior mesenteric artery plus omentum
Superior mesenteric artery plus body of stomach

Adrenal (suprarenal) gland
Celiac artery
Colon (other than transverse colon including hepatic flexure)
Liver (including porta hepatis)

Further contiguous extension

Stated as T4
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
Pathologic classification criteria met, evaluation done:
Results not documented in patient record
No surgical resection of known primary tumor (not T0)
Resection insufficient for site-specific pathologic assessment
No surgical resection of primary tumor and there isn’t a positive biopsy of a structure in the highest T category and highest N category
Evidence of metastatic disease (pM1), no other workup
Only Pathologic Stage Group documented (no T, N, or M information available)