<s>[INST] Question: Prostate Cancer diagnosed in 2005, Gleason 2, watch and wait until 2015 had orchiectomy followed by Casodex followed by Lupron. My problem is after moving three Physicians disagree. currently bone scan shows possible metastis in right shoulder and left groin but no change on bone scan after two years. Very confused. [/INST] Hello,You have prostate cancer. Bone scan is to check whether cancer is spread to the bone or not. Prostate cancer is known for bone metastasis.Please send me your bone scan report, so that I can help you further. Hope I have answered your query. Let me know if I can assist you further.Regards,Dr. Hardik Sanghvi </s>