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This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0). License (http://creativecommons.org/licenses/by-nc-sa/4.0/)
A patient with cholangiocarcinoma involving both left and right hepatic ducts. A) Tumor uptake in positron emission tomography (PET) scan. B) Clinical target volume (CTV) and dose coverage in CT planning. C) CTV and dose coverage in CT planning. D) Bilateral catheter biliary drainage