some years back I saw a trainee GP. Having then recently had two Basal carcinoma on my face which had to be removed, I was concerned about a strange small patch on my forehead, no lump, but skin a different colour.
He said not to worry, could not be a BC, I suggested that he asked his Mentor advice, which he did by telephone. Senior Doctor said due to my history I should have it checked out, and was referred. Fortunate, as it turned out, as this was the largest BS of these I had, all doing downwards, not upwards, took six stitches when they cut it out.
All such trainees have to be under a senior GP who acts as their mentor. Usually, such trainees are likely to be more careful with their diagnosis, but anyone can ask they check with their mentor.