Thought I would update this thread based on some feedback from my Oncologist.
My oncologist was very unphased about the intraductal cancer and didn’t seem to think that it impacted on treatment options or prognosis. He said the overall gleason was the main thing and that yes there are other rarer cancers like small cell which can be more resistant but ultimately until response to treatment is seen the plan is the same.
Just an FYI in case anyone has a similar query.