Before you start panicking, you won't know the actual results until you get the histology report which will take 6-8 weeks and coincide with the consultation with the urologist. He will also need to get a PSA test prior to that. At that point they can decide what the next course of treatment will be.
In some cases, the PSA will come back as <0.01 and it becomes a wait and see what develops situation or they may decide to do more scans and determine an RT treatment.
Either way, as it is often said, the mothership has been removed and then it's a case of determining any secondary treatments.
I hope he is recovering OK and that the shoulder pain is under control - it will take a few days.
As I said, not the time to worry until the report comes back.