Pathologic Staging (pTNM) AJCC 8th Edition CAP Approved Gastrointestinal • Intrahepatic Bile Ducts 4.0.0.0  

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 (intraductal tumor)

 

___ pT1:  Solitary tumor without vascular invasion, =5 cm or >5 cm

___ pT1a:  Solitary tumor =5 cm without vascular invasion 

___ pT1b:  Solitary tumor >5 cm without vascular invasion

___ pT2: Solitary tumor with intrahepatic vascular invasion, or multiple tumors, with or without vascular invasion

___ pT3: Tumor perforating the visceral peritoneum  

___ pT4:  Tumor involving local extrahepatic structures by direct invasion 

Regional Lymph Nodes (pN) (Note H)

___ pNX: Regional lymph nodes cannot be assessed

___ pN0: No regional lymph node metastasis

___ pN1: Regional lymph node metastasis present

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

___ pM1: Distant metastasis

Specify site(s), if known: ____________________________

Summary of changes AJCC 7th to 8th edition:

- Added pT1a/pT1b

- Made pT2 a single category

Gastrointestinal

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