Someone needs to coordinate the diagnostic work. I had some additional tests after the cancer surgery, based upon an observation the oncologist made. But he pointed out that the kidney he called attention to was out of his field (gynecology) so it was best if my GP coordinated the tests, and that's what he did, meeting with me to discuss results. Everything was fine, but it was good that the specialist said "there's something you might want to take a look at, on general principles."

SRS