Conversation: The conversation between human and AI assistant.
[|Human|] Dear Doctor , My father is suffering from prostate cancer from last six years.he has been taking his treatment at TATA hospital,MUMBAI.He had taken his chemotherapy two years back,due to again rise in PSA level he had to take radiotherapy two months back at oswal cancer hospital,Ludiana.he took his therapy at oswal ludiana because the doctors have referred him.After all this his psa level is 189.in the bone scan it was found that the cancer has moved into the backbone.after the bone scan he got 10 cycles of radiotherapy which ended on14 march.Doctors have asked him to go for chemotherapy again next month,I would like to know tht is it fine to take chemotherapy twice???please tell me..I ll be thankful to you.if posible then please give me your contact number also. THNKING YOU, MOHD.FAIZAN KHAN
[|AI|]  Hi, Your father is perhaps having what is known as castrate resistant prostate cancer with disease progression. I presume that what you are mentioning to as chemotherapy taken 2 years ago actually is hormone therapy. Even if he has taken chemotherapy the first time, and had responded to it then, we could safely consider chemotherapeutic re-challenge in his present clinical context.  Unlike chemotherapy for many diseases, only a single Chat Doctor.  There are two