Conversation: The conversation between human and AI assistant.
[|Human|] My father has been diagnosed with Prostate Cancer approximately 18 months agi. I believe it has not spread outside the prostate. He was taking Casodex and for some weird reason his endroconologist told him to stop taking it. I spoke to his dr. s nurse who told me that it s working and he doesn t need to take it for now. This week his Oncologist prescribed Ketoconazole. The Oncologist said he needed because the Casodex wasn t working any longer. His PSA level was only .8 I have no idea what to do here. f
[|AI|]  Thanks for the query. Casodex and ketoconazole have similar effects on prostate cancer, and he can try with ketoconazole and see is there improvement. He should also consider surgery if there is no result on conservative therapy. PSA doesn't need to correlate with cancer, so you should not consider only this parameter. He needs frequent follow up at this point and prevent any possible complications and cancer spreading. Wish you good health. Feel free to ask. Regards