Prostrate issue

Old Salt is right. There are many causes of slight increase in PSA. During a recurring Staph infection my PSA scores would fluctuate wildly from 4 to 9 to 6 to 18. Sexual activity, exercise, infections, BPH symptoms,(unlikely at your age but possible). The presence of the antigen is only a marker of prostate activity or duress. It only says something is happening, but it doesn't tell you what is happening. So like he said, you need to establish a baseline to be able to judge fluctuations in PSA scores.

The likelihood of bladder cancer cells migrating to the prostate? Are you afraid that bladder cancer cells are causing the slight fluctuations in prostate antigen levels? Seems like you would have more severe fluctuations in levels than .7 to 1.1... But I don't know enough about it to say for sure, but other guys here can give you a better opinion whether that is typical fluctuations from sexual activity et al like Old Salt said, or indication of duress. But I doubt it is indication of severe symptoms.

Are you scheduled for a digital rectal exam? Welcome to male middle age and the joys of DREs. Unfortunately, they are a necessary part of a diagnostic profile along with PSA scores. There are other diagnostic procedures, but you won't have to worry about them unless the DREs and PSA scores are significant. 

While you wait for other guys to log on here, you can search this forum for any keyword and get quite an education on prostate cancer and PSA scores, some scores in the hundreds during advanced PC cases. 

But every male 40 to 50 and older should be monitoring his prostate activity... So good for you.

Timothy,

Welcome to the board. Best wishes for complete remission on the bladder cancer.

As commented by survivours above, the PSA is specific to prostatic cells so that any probability of it being influenced directly by a mixture of bladder cancer is remote. The only probability that bladder metastases in the prostate could give rise to an increase of PSA serum would be if a bladder tumour of a reasonable size were squeezing prostatic cells causing sort of inflammation.
In any case, from your comments above, I think that such has been ruled out so that you are now worried that the increase of the PSA relates to prostate cancer (PCa). Surely such could be the case, but the slight increase of 0.40 ng/ml in 4 years (0.70 to 1.10 ng/ml) cannot define such occurrence. You need to continue testing (every three months), adding other proper markers for PCa like the free PSA (fPSA), PCa3 (genetic analysis of cells in the urine), PAP (prostatic acid phosphatase) and CEA (Carcinoembryonic Antigen) that will also serve to verify any possibility of bladder cancer recurrence. If the rise continues or other markers make it justifiable, then you should get a biopsy.

Another aspect regards the type of bladder cancer you have been diagnosed with and the treatment administered. Some bladder cancers are more prune to metastasize than others and the treatment for recurrences could have been radiation which administration could have affected the prostate causing inflammation. Chemotherapy for the initial therapy would influence prostatic cells but that would be detected 4 years ago.

I recommend you to keep copies of all exams done for the bladder issue as those image studies will be used to compare results in any future diagnosis of PCa, if any.

Please note that I have no medical enrolment. I have a keen interest and enthusiasm in anything related to prostate cancer, which took me into researching and studying the matter since 2000 when I become a survivor and continuing patient.

Best,

VGama