my dad went in for a procedure that insets a camera into the uretha to look at the bladder due to blood in his urine (which he has had the same amount of traces of blood in his urine for 40 years. unfortunately they were unable to inset the tube with out a lot of pain so they are going to due the procedure when he is under full anesthetic. They did a test called the fischer test ( might be spelled wrong) first which came back positive for cancer cells which is leading to the rest of the testing I listed above). He did have a contrast scan of the entire area which has come back clear. What are your thoughts with regards to what he might have?