Hello, I am Dr Helen, a UK doctor.
It sounds like you have some enlargement of the prostate gland which is very common in men. This begins around the 40s to 50s.
The urethra, the tube urine passes through, goes straight through the prostate gland and can become compressed, or occluded, by the prostate. This is probably what was meant by using the word "occlusive".
The word "bullous" in medicine usually refers to pockets of air (in the lungs) or fluid (such as skin blisters.) It is not commonly used to describe prostate changes. I'm wondering if they saw some small bumps (or "bullae") in the urethra itself when they did the cystoscopy. These are benign bumps that surgeons have occasionally reported seeing when performing cystoscopies.
I do think you should contact the urology team and ask them to clarify this for you. Your GP should get a copy of the cystoscopy result so you could also go and see him/her for further clarification.
The urology team should also be advising you on if any further treatment is needed to improve the urine flow.
All the best.
I joined JustAnswer in June 2013 and am a UK doctor. I have been qualified for 23 years and have widespread experience in GP and cancer care.