So today I returned back to the dermatologist... I had a skin cancer tumour removed in late 2016, just a few months before my PC was diagnosed. Since I have had twice-yearly check-ups. during my last check-up three areas of concern were found, photo's made and an appointment made. Today I heard that one area was 'changed' and it needs to be removed and investigated... So next Wednesday it will be removed.
In other more positve news I had a PSA test last week and my new result was 0.8, down from 0.91 on the first of December. I still have a prostate, I had radiotherapy and have been on HT since June 2017.
I had understood that I will never have a non-detectable PSA result.