Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Klatskin tumor ?
    ### Response:
    What are the signs and symptoms of Klatskin tumor? The symptoms associated with Klatskin tumors are usually due to blocked bile ducts. Symptoms may include: Jaundice Itching Light colored stools and/or dark urine Abdominal pain Loss of appetite / weight loss Fever Nausea / vomiting The Human Phenotype Ontology provides the following list of signs and symptoms for Klatskin tumor.
    