Conversation: The conversation between human and AI assistant.
[|Human|] I have recently noticed what appears to be a discharge from my penis, its black and looks like it consists of filament like material. I had a urethoplasty 9 years ago with no problems since. I do have a bladder diverticulum that Ive had for about 15 years (this apparantly caused the stricture or vice versa). Anyway, back to the discharge, it is painless, no pain upon urination, no erection problems. The amount of discharge is minute and occurs about once every three days. It is relegated to the head of the penis, usually around the opening. Due to my urological history, I am followed pretty closely. An MRI done about three weeks ago showed no abnormalities. Any ideas? I am not currently sexually active since I broke up with my girlfriend about a year ago; we were both monogamous and we were together for about 10 years.
[|AI|]  Hi, Welcome to Chat Doctor forum.  You had arthroplasty 9 years ago. You also had diverticula of bladder, and stricture urethra 15 years back.  Now you have got pain less, color less discharge, which is sticky. It may not have any relation with the previous incidents.  As you describe it appears to be the physiological, discharge of the prostate gland which usually comes before the semen comes, as you are lack of sex it might be appearing like this.  Wishing for a quick and complete recovery. Thank you.