what kind of specialist should i contact?

[jamesgs1]

i am a 79 year old male, i had prostate cancer in 2001 and again in 2005 (2005 prostate was frozen), because of radiation treatments in 2001 (bladder decinagrated), had to have my bladder removed and have a urinary stoma in its place.
around six months ago i started having a discharge from my penis, because i don’t have a bladder my penis opens up into my peritoneal cavity, if i do anything strenuous i produce blood in the peritoneal fluid, the only way i can control this problem is to use maxi pads in my underwear, which i must change four or five times a day. I also have a distinct pain in the lower right quadrant of my stomach.  
my urinary physician wants to cauterize the opening between my penis and my peritoneal cavity, if he does this, where does the fluid go,
how is the fluid removed?
what kind of specialist should i contact.

[GuitarRox]

It sounds like you are seeing a urologist already? (the urinary doctor as you refer to him). This is the best specialty, I would think, for this situation. You can always get a second opinion from ANOTHER urologist. Let us know any updates.