You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is All are true about prognosis of cholangiocarcinoma except and explain in detail?
Prognosis of cholangiocarcinoma Predictors of improved survival are : well-differentiated tumors, negative - resection margin and the performance of a concomitant hepatic resection. Pattern of failure after curative resection includes peritoneal spread, hepatic metastasis, local extrahepatic recurrence and distant metastasis (most commonly lung) Surgery is generally not indicated for recurrent cholangiocarcinoma Sclerosing or scirrhous type is most difficult to treat Ref: Sabiston 20th edition Pgno :1514-1518