Kathy,
I can hear your worry and concern for your husband. And I understand his anxiety at not getting a diagnosis for his organic symptom. This constant anxiety is not good for him (and neither is the blood in the urine).
I have had bladder cancer, but all my recent scopes have been good. There has been no blood in the urine. Yet sometimes I have very irritative bladder symptoms. For instance, this morning, I was in the bathroom every 15 minutes for the first hour of work. Sometimes I can go for long periods of time without urinating, but not today. An association finally occured to me this morning, of bladder irritation usually ocurring along with rectal pain, and I wondered what that was about.
Anyway, I think that you should not ignore the blood in the urine at all. There is always an organic reason for blood and should yet be pursued. Do not let the doctors poo-poo this away. Do you have a teaching hospital close by where your husbands' concerns can be listened to with validation and respect and with proper evaluation? I cannot help but think that something is being missed.
With warmest regards,
Rosemary