Today, we conclude our liver mini-series by tackling these crucial topics.F irst, we’ll cover the evidence-based management for biliary tract cancers—including gallbladder cancer and cholangiocarcinoma—with a focus on the patterns of failure that guide our use of adjuvant radiation. Then, we’ll pivot to one of the most common clinical scenarios we face: treating colorectal liver metastases, discussing the role of SBRT in the context of other local therapies.