Pathologic Staging (pTNM)

CAP Approved Gastrointestinal • Distal Extrahepatic Bile Ducts 4.0.0.0

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

Primary Tumor (pT)

___ m (multiple primary tumors)

___ r (recurrent)

___ y (posttreatment)

Primary Tumor (pT)

___ pTX:        Primary tumor cannot be assessed

___ pTis:        Carcinoma in situ/high-grade dysplasia

___ pT1:        Tumor invades the bile duct wall with a depth less than 5 mm

___ pT2:        Tumor invades the bile duct wall with a depth of 5-12 mm

___ pT3:        Tumor invades the bile duct wall with a depth greater than 12 mm

___ pT4:        Tumor involves the celiac axis, superior mesenteric artery, and/or common hepatic artery

Regional Lymph Nodes (pN)

___ pNX:        Regional lymph nodes cannot be assessed

___ pN0:        No regional lymph node metastasis

___ pN1:        Metastasis in one to three regional lymph nodes

___ pN2:        Metastasis in four or more regional lymph nodes

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

• pT stage has component of depth of invasion for T1, T2, and T3

Gastrointestinal

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