Hi Peggy,
Just to say I have seen that you sent me a message but I don't do private messages ... I think it is much safer to ask and answer questions publicly so that any errors or misinformation can be corrected by others.
As to your question above, you are overthinking and letting your imagination run wild so it would be better for your own well-being if you could try to reign it in a bit and wait for the results of the tests. However you are unlikely to get a terminal diagnosis - terminal means there is only a short time left to live and all treatments except pain/symptom relief have been stopped. If your husband'a scans are okay he will get a curative diagnosis - that means they will offer him radiotherapy because they believe it may cure the cancer (technically there is no cure for cancer and the better word for it is that they hope the radiotherapy will put him into full remission). If the scans show the cancer has spread, he will get a diagnosis of advanced / incurable cancer - it can't be cured so they will offer hormone treatment with chemo to control it. Some men on this forum are still here and reasonably healthy 10 years or more after an incurable diagnosis, some live for only a short time. Your oncologist would not be able to give a prediction of how long because he will have no way of guessing how many years the hormones will work for.
In answer to one of your other queries, the doctors can tell from the biopsy how aggressive it is and whether it is one of the rare types that don't work with hormones. The fact that your OH has already been told he will be on hormones means he doesn't have that rare type.