Tumor Tip of the Week-02-23-2024 [Cholangiocarcinoma Tip of the week-revised] see new instructions-Solid Tumor Rules-Other -Table 9a

Scenario:

• 1-2023 Bx Liver+ Adenocarcinoma
• Oncologist/GI Multidisciplinary Conference Stage IV (cT2N1M1) intrahepatic cholangiocarcinoma with pulmonary metastases, regional lymphadenopathy, and multifocal hepatic involvement

Question: How should histology be assigned?

• 8140 Adenocarcinoma
• 8160 Cholangiocarcinoma

Rationale:

2024 Solid Tumor Rules Other-NOTE Table 9a can be applied to cases diagnosed 2023 forward.