Pathologic Stage Classification (pTNM, AJCC 8th Edition) (Note G)

Note: Reporting of pT, pN, and (when applicable) pM categories is based on information available to the pathologist at the time the report is issued. Only the applicable T, N, or M category is required for reporting; their definitions need not be included in the report. The categories (with modifiers when applicable) can be listed on 1 line or more than 1 line.

TNM Descriptors (required only if applicable) (select all that apply)

___ m (multiple primary tumors)

___ r (recurrent)

___ y (posttreatment)

Primary Tumor (pT)

___ pTX: Primary tumor cannot be assessed

___ pT0: No evidence of primary tumor

___ pTis: Carcinoma in situ

___ pT1: Tumor invades the lamina propria or muscular layer

___ pT1a: Tumor invades the lamina propria

___ pT1b: Tumor invades the muscular layer

___ pT2: Tumor invades perimuscular connective tissue on the peritoneal side, without involvement of the serosa (visceral peritoneum) or tumor invades the perimuscular connective tissue on the hepatic side, with no extension into the liver

___ pT2a: Tumor invades perimuscular connective tissue on the peritoneal side, without involvement of the serosa (visceral peritoneum)

___ pT2b: Tumor invades the perimuscular connective tissue on the hepatic side, with no extension into the liver

___ pT3: Tumor perforates the serosa (visceral peritoneum) and/or directly invades the liver and/or one other adjacent organ or structure, such as the stomach, duodenum, colon, pancreas, omentum, or extrahepatic bile ducts

___ pT4: Tumor invades main portal vein or hepatic artery or invades two or more extrahepatic organs or structures

Regional Lymph Nodes (pN)

___ pNX: Regional lymph nodes cannot be assessed

___ pN0: No regional lymph node metastasis

___ pN1: Metastases to one to three regional lymph nodes

___ pN2: Metastases to four or more regional lymph nodes

___ No nodes submitted or found

Distant Metastasis (pM) (required only if confirmed pathologically in this case)

___ pM1: Distant metastasis

Specify site(s), if known: __________________________

Gastrointestinal

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