Conversation: The conversation between human and AI assistant.
[|Human|] my mother, age 88 was diagnosed with metastatic urothelial carcinoma. just 6 weeks ago.  we were told she had 6-9 months with pallative radiation. she passed away last week. in the end, she could not turn over, sit up or do anything but lie on her back.  the pain was so intense. she had been fairly healthy up until this.  how can cancer be so aggressive and cause someone  die so quickly?  im still not believing what we just went through.
[|AI|]  Hi, dear I have gone through your question. I can understand your concern. She had metastatic epithelial carcinoma.  It is already stage 4 cancer.  It spread very rapidly to other body organ and everyborgan and system is affected.  I am very sorry to heard about her, but it is natural course of cancer.  We don't have any treatment for cancer in that stage. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health.