Conversation: The conversation between human and AI assistant.
[|Human|] Dad has stomoch cancer stage 4 he has extreme thirst and is vomiting blood , plus blood also present in stools, he has not eaten for two weeks, says he has a full feeling all the time and stomoch feels like it has a ball inside him, doctors have decided that treatment is not an option, what should we expect
[|AI|]  Hi. It's very sad to hear about your fathers' disease. Stage 4 stomach cancer has a very poor prognosis and limited survival. A good oncologist should know when not to treat. The decision is based upon the extent and stage of disease, age of patient, patients performance status, comorbid and expected survival. I am sure your oncologist must have considered all these issues. Expected survival in stage 4 cancer without treatment is few weeks to 2 to 3 months. I hope your question has been answered. If you have any further questions I will be happy to answer. Thank you for choosing Chat Doctor.